Numbers n such that the concatenation of n with n+8 gives a square.
6001, 6433, 11085116, 44496481, 96040393, 115916930617, 227007035017
3 seqfan posts
Fri Apr 30 17:44:17 CEST 2010 [seqfan] Concatenation: summary
Fri Apr 23 18:06:40 CEST 2010 [seqfan] Re: Concatenation
Fri Apr 23 17:40:06 CEST 2010 [seqfan] Concatenation
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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