A117464 Triangular numbers for which the product of the digits is a square.

0, 1, 10, 28, 55, 66, 91, 105, 120, 190, 210, 300, 406, 595, 630, 703, 780, 820, 903, 990, 1035, 1081, 1128, 1326, 1540, 1770, 1830, 2016, 2080, 2211, 2346, 2701, 2850, 3003, 3081, 3160, 3240, 3403, 3486, 3570, 4005, 4095, 4560, 4950, 5050, 5151, 5460, 5995