Numbers n such that the decimal representation of n is contained as substring in that of the n-th pentagonal number.
0, 1, 5, 7, 25, 67, 482, 551, 625, 667, 2937, 6667, 9284, 9376, 9649, 48179, 49900
1 seqfan posts
Wed Jul 28 20:25:39 CEST 2010 [seqfan] Re: Numbers n such that the decimal representation of n is contained as substring in that of the n-th pentagonal number.