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Search: id:A117852
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| 1, 2, 1, 6, 4, 1, 20, 18, 6, 1, 70, 80, 36, 8, 1, 252, 350, 200, 60, 10, 1, 924, 1512, 1050, 400, 90, 12, 1, 3432, 6468, 5292, 2450, 700, 126, 14, 1, 12870, 27456, 25872, 14112, 4900, 1120, 168, 16, 1, 48620, 115830, 123552, 77616, 31752, 8820, 1680, 216, 18, 1
(list; table; graph; listen)
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OFFSET
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0,2
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FORMULA
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Sum_{k, 0<=k<=n}T(n,k)*x^k = A126869(n), A002426(n), A000984(n), A026375(n), A081671(n), A098409(n), A098410(n) for x = -2, -1, 0, 1, 2, 3, 4 respectively . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Sep 28 2007
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MAPLE
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c:=n->binomial(2*n, n): T:=proc(n, k) if k<=n then binomial(n, k)*c(n-k) else 0 fi end: for n from 0 to 10 do seq(T(n, k), k=0..n) od; #
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CROSSREFS
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Cf. A098473.
Sequence in context: A094527 A054335 A110681 this_sequence A080245 A080247 A078937
Adjacent sequences: A117849 A117850 A117851 this_sequence A117853 A117854 A117855
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KEYWORD
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nonn,tabl
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AUTHOR
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Farkas Janos Smile (smile_farkasjanos(AT)yahoo.com.au), Dec 21 2006
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EXTENSIONS
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Edited by njas at the suggestion of Andrew Plewe, Jun 12 2007
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