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Search: id:A161741
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| -4, -14, 1561, 25809, 218769, 1284261, 5885671, 22482031, 74581507, 220977757, 596666070, 1490430630, 3484310310, 7693206894, 16160890914, 32492871698, 62838521438, 117376191548, 212507783895, 374035542815, 641676187295
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n) = (n+5)*(n+4)*(n+3)*(n+2)*(n+1)*(n)*(175*n^6+1365*n^5+2671*n^4-2805*n^3-14735*n^2-14445*n-2466)/5443200
The denominator of a(n) (5443200) equals the product of the first four terms of A036283 (6*60*126*120). - Johannes W. Meijer (meijgia(AT)hotmail.com), Oct 22 2009
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CROSSREFS
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Equals fifth right hand column of A161739 (RSEG2 triangle).
Other right hand columns are A000292, A107963, A161740.
Sequence in context: A001140 A138488 A022508 this_sequence A097548 A127910 A128235
Adjacent sequences: A161738 A161739 A161740 this_sequence A161742 A161743 A161744
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KEYWORD
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easy,sign
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AUTHOR
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Johannes W. Meijer and Nico Baken (meijgia(AT)hotmail.com and n.h.g.baken(AT)tudelft.nl), Jun 18 2009
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