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Search: id:A110292
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| A110292 |
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Riordan array (1-u,u) where u=(-1+sqrt(1+8x))/4. |
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+0
2
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| 1, -1, 1, 2, -3, 1, -8, 12, -5, 1, 40, -60, 26, -7, 1, -224, 336, -148, 44, -9, 1, 1344, -2016, 896, -280, 66, -11, 1, -8448, 12672, -5664, 1824, -464, 92, -13, 1, 54912, -82368, 36960, -12144, 3240, -708, 122, -15, 1, -366080, 549120, -247104, 82368, -22704, 5280, -1020, 156, -17, 1, 2489344, -3734016
(list; table; graph; listen)
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OFFSET
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0,4
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COMMENT
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Inverse of Riordan array (1/(1-x),x(1+2x)), A110291. First column is (-1)^n*(2)^(n-1)*C(n-1).
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EXAMPLE
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Rows begin
1;
-1,1;
2,-3,1;
-8,12,-5,1;
40,-60,26,-7,1;
-224,336,-148,44,-9,1;
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CROSSREFS
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Sequence in context: A106033 A121634 A006015 this_sequence A138672 A103749 A103750
Adjacent sequences: A110289 A110290 A110291 this_sequence A110293 A110294 A110295
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KEYWORD
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easy,sign,tabl
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Jul 18 2005
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