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012013014015016017018019023024025026027028029034035036037038039045046047048049056057058059067068069078079089123124125126127128129134135136137138139145146147148149156157158159167168169178179189235236238245246248256257258259267268269278289345346356357358359367368369378456457458459467468469478567568569578579589678679789

Triangular numbers with digits in {6, 8, 9} (up to 1032)

A119235 = nA119234 = T(n)
36
1166
36666
37121168898988866
42118610888698868996686886
1180677745929588696999969866686966889999889666

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