A095869 Triangular numbers whose digit permutations yield no further triangular numbers.

1, 3, 6, 15, 21, 28, 36, 45, 55, 66, 78, 91, 136, 171, 231, 276, 378, 406, 435, 465, 528, 561, 595, 666, 703, 741, 861, 903, 990, 1081, 1128, 1176, 1225, 1275, 1326, 1431, 1540, 1596, 1653, 1711, 1770, 1953, 2016, 2211, 2278, 2346, 2485, 2556, 2628, 2775

Offset: 1

Author

Ray Chandler, Jun 29 2004

Keywords

• nonn
• base

Crossrefs

Cf. A000217, A069674, A077671, A095870.

Extensions

Offset changed to 1 by Jinyuan Wang, Aug 06 2021