A076169 Triangular numbers whose sum of prime factors (with repetition) is also triangular.

1, 3, 21, 36, 105, 231, 666, 2080, 2346, 4186, 5356, 5886, 6903, 7140, 7503, 7875, 9730, 10296, 16836, 20301, 21945, 26106, 28680, 29646, 33930, 43660, 46360, 51040, 52003, 55611, 57970, 59340, 79800, 81810, 85078, 91806, 95266, 98790