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centered pentagonal n.  and  semiprime

First numbers that belong to both sets:

6, 51, 106, 141, 226, 391, 526, 681, 766, 951, 1501, 1891, 2031, 2326, 2481, 2641, 3151, 3901, 4101, 4306, 6631, 6891, 7981, 8266, 8851, 10081, 10401, 11391, 13141, 14631, 15406, 16201, 20931, 22801, 23281, 24751, 27301, 27826, 28891, 29431, 30526, 32206, 33351, 35701, 36301, 38131, 38751, 41926, 43231, 45226, 45901, 46581, 47266, 48651, 49351, 54391, 58141, 58906, 60451, 64401, 65206, 66831, 77001, 77881, 78766, 80551, 81451, 86026, 87891, 88831, 91681, 98506, 101506, 103531, 111831, 112891, 120451, 124881, 129391, 132826, 144601, 148231, 153141, 154381, 155626, 158131, 159391, 161926, 163201, 165766, 169651, 173581, 180231, 182926, 187006, 189751, 191131, 193906, 198106, 200931, 202351, 212431, 216826, 218301, 219781, 231801, 233326, 236391, 237931, 250431, 263251, 266506, 268141, 274731, 281401, 288151, 294981, 298426, 301891, 303631, 307126, 308881, 345031, 354381, 360051, 361951, 367681, 369601, 377331, 381226, 383181, 391051, 397006, 409051, 423331, 429526, 439951, 442051, 446266, 448381, 452626, 456891, 465481, 476331, 480706, 482901, 493951, 500641, 502881, 518701, 555781, 560506, 565251, 584431, 591706, 594141, 599026, 611326, 613801, 616281, 643891, 656641, 659206, 664351, 677301, 687751, 698281, 706231, 708891, 716901, 719581, 730351, 735766, 738481, 741201, 749391, 760381, 771451, 779806, 785401, 793831, 805141, 807981, 810826, 828001, 842451, 854101, 862891, 865831, 880606, 886551, 889531, 910531, 913551, 919606, 947101, 953266, 959451, 962551, 987531, 993826, 1000141, 1019206, 1022401, 1038451, 1048141, 1051381, 1061131, 1080766, 1090651, 1117231, 1140751, 1144131, 1161106, 1167931, 1171351, 1181641, 1185081, 1195431, 1209301, 1223251, 1240801, 1251391, 1262026, 1272706, 1297801, 1308631, 1330426, 1341391, 1348726, 1356081, 1359766, 1367151, 1370851, 1381981, 1385701, 1396891, 1411881, 1415641, 1419406, 1430731, 1438306, 1449706, 1457331, 1472641, 1476481, 1491891, 1507381, 1530766, 1534681, 1554331, 1582051, 1594006, 1602001, 1634181, 1650391, 1662601, 1666681, 1695381, 1703626, 1716031, 1732641, 1749331, 1791406, 1812631, 1816891, 1846851, 1851151, 1864081, 1868401, 1903141, 1929406, 1938201, 1951431, 1955851, 1986931, 1991391, 2013766, 2027251, 2063431.

Some larger examples :