Centered heptagonal numbers are figurate numbers (see picture aside)
defined as
.
Two formulas involving centered heptagonal numbers:
The first centered heptagonal numbers are
1, 8, 22, 43, 71, 106, 148, 197, 253, 316, 386, 463, 547, 638, 736, 841, 953, 1072, 1198, 1331 more terms
Pictorial representation of remainders (mod 2, 3, ...,11) frequency. For a table of values and more details
click here
A graph displaying how many centered heptagonal numbers are multiples of the primes
p from 2 to 71. In black the ideal line 1/
p.