8*P_4(2n), 8 times the Legendre Polynomial of order 4 at 2n.
3, 443, 8483, 44283, 141443, 347003, 721443, 1338683, 2286083, 3664443
2 seqfan posts
Fri Nov 13 04:15:00 CET 2009 [seqfan] Re: A140870 & A050216
Fri Nov 13 02:23:59 CET 2009 [seqfan] A140870 & A050216
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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