Central quadrinomial coefficients.
1, 4, 44, 580, 8092, 116304, 1703636, 25288120, 379061020, 5724954544
2 seqfan posts
Thu Jul 23 22:03:28 CEST 2009 [seqfan] Re: A071816, A005900
Thu Jul 23 18:37:37 CEST 2009 [seqfan] A071816, A005900
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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