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 A119364 Central coefficients of number triangle A119335. 1
 0, 1, 1, 1, 11, 81, 351, 1149, 3529, 12601, 52724, 222641, 879308, 3295384, 12303201, 47320365, 186738507, 739129809, 2894481813, 11237844615, 43647142533, 170543919327, 669744238998, 2633027605209, 10337488816041, 40544676533466 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 COMMENTS A119363(n)-a(n)=A119365(n). LINKS Table of n, a(n) for n=0..25. FORMULA a(n)=sum{k=0..n-1, C(n+1,3k)*C(n-1,3k)}; a(n)=A119335(2n,n+1). CROSSREFS Sequence in context: A024146 A233176 A156847 * A305826 A252817 A210064 Adjacent sequences: A119361 A119362 A119363 * A119365 A119366 A119367 KEYWORD easy,nonn AUTHOR Paul Barry, May 16 2006 STATUS approved

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Last modified July 23 11:07 EDT 2024. Contains 374549 sequences. (Running on oeis4.)