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 A111099 Sum of even Fermat coefficients rounded to nearest integer. 0
 0, 1, 2, 4, 9, 20, 45, 105, 246, 583, 1393, 3355, 8133, 19825, 48554, 119412, 294761, 729980, 1813107, 4515225, 11271198, 28196896, 70679137, 177487714, 446446560, 1124706145, 2837445500, 7167878628, 18129622761, 45907772900, 116372614251 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS P. A. Piza, Fermat coefficients, Math. Mag., 27 (1954), 141-146. FORMULA Following Piza's definition for the Fermat coefficients: (n:c)=binomial(2n-c, c-1)/c, a(n)= Round( sum_{0binomial(2*n-c, c-1)/c: seq(round(add(FermatCoeff(n, 2*r), r=1..floor(n/2))), n=1..40); CROSSREFS Sequence in context: A329276 A308435 A188460 * A000632 A090245 A274965 Adjacent sequences:  A111096 A111097 A111098 * A111100 A111101 A111102 KEYWORD nonn AUTHOR Pab Ter (pabrlos2(AT)yahoo.com), Oct 13 2005 STATUS approved

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Last modified December 5 10:45 EST 2019. Contains 329751 sequences. (Running on oeis4.)