Number of representations of n as a sum of two squares and two triangular numbers.
1, 6, 13, 14, 18, 32, 31, 30, 48, 38, 42, 78, 57, 54, 80, 62, 84, 96, 74, 96, 121, 108, 90
1 seqfan posts
Thu Mar 24 16:33:46 CET 2011 [seqfan] Re: sigma(4n+1) mod 4 and partitions