Triangular numbers that have some nontrivial permutation of digits which is also triangular.
120, 153, 210, 253, 325, 351, 496, 946, 1378, 1485, 1830, 1891, 2145, 2415, 2701
1 seqfan posts
Sun Oct 18 01:55:31 CEST 2009 [seqfan] Re: Anagrams of triangular numbers