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A095869
Triangular numbers whose digit permutations yield no further triangular numbers.
3
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
1,2
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Ray Chandler, Jun 29 2004
EXTENSIONS
Offset changed to 1 by Jinyuan Wang, Aug 06 2021
STATUS
approved