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 A110136 Sums of antidiagonals of number square A110135. 1
 1, 3, 9, 31, 115, 447, 1803, 7499, 32069, 140795, 633981, 2925671, 13826405, 66861107, 330544409, 1669024071, 8598951451, 45160258503, 241540648011, 1314519420803, 7273377034547, 40886211572271, 233344325395327 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Also row sums of A110135, when read as number triangle. LINKS Table of n, a(n) for n=0..22. FORMULA a(n) = Sum_{j=0..floor((n-k)/2)} binomial(n-k,j)*binomial(2(n-k-j),n-k)*k^j. CROSSREFS Sequence in context: A049154 A225305 A365113 * A202180 A151034 A151035 Adjacent sequences: A110133 A110134 A110135 * A110137 A110138 A110139 KEYWORD easy,nonn AUTHOR Paul Barry, Jul 13 2005 STATUS approved

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Last modified December 8 23:37 EST 2023. Contains 367681 sequences. (Running on oeis4.)