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 A140227 Binomial transform of [1, 4, 6, 4, 1, 1, -1, 1, -1, 1,...]. 0
 1, 5, 15, 35, 70, 127, 215, 345, 530, 785, 1127, 1575, 2150, 2875, 3775, 4877, 6210, 7805, 9695, 11915, 14502, 17495, 20935, 24865, 29330, 34377, 40055, 46415, 53510, 61395, 70127, 79765, 90370, 102005, 114735, 128627, 143750, 160175, 177975 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA A007318 * [1, 4, 6, 4, 1, 1, -1, 1, -1, 1,...]. O.g.f.: x(1+x)(x^4-x^3+x^2-x+1)/(1-x)^5. a(n)=2+35*(n-1)^2/12+(n-1)^4/12, n>1. - R. J. Mathar, Jun 18 2008 EXAMPLE a(4) = 35 = (1, 3, 3, 1) dot (1, 4, 6, 4) = (1 + 12 + 18 + 4). CROSSREFS Sequence in context: A090580 A000332 A342213 * A264925 A049016 A139761 Adjacent sequences:  A140224 A140225 A140226 * A140228 A140229 A140230 KEYWORD nonn AUTHOR Gary W. Adamson, May 12 2008 EXTENSIONS More terms from R. J. Mathar, Jun 18 2008 STATUS approved

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Last modified April 21 19:16 EDT 2021. Contains 343156 sequences. (Running on oeis4.)