Number of partitions of n if there are two kinds of 1, two kinds of 2 and two kinds of 3.
1, 2, 5, 10, 19, 33, 57, 92, 147, 227, 345, 512, 752, 1083, 1545, 2174, 3031, 4179
2 seqfan posts
Sat Feb 12 12:35:49 CET 2011 [seqfan] Re: about 33826 formulas,