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2, 14, 90, 612, 4608, 38760, 361440, 3688560, 41277600, 501379200, 6576837120, 92697696000, 1397414592000, 22498705152000, 382873642905600, 6908854669516800, 131496596027596800, 2633684945988096000
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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PROG
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(Python) def a(n): return sum(row(n)) # row(n) is given in A081957. - James Rayman, Jan 18 2021
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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Corrected and extended by Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 08 2003
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STATUS
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approved
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