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 A014228 Product of 3 successive Catalan numbers. 2
 2, 10, 140, 2940, 77616, 2378376, 80978040, 2982691140, 116776877360, 4800591267472, 205384736883872, 9084324900632800, 413286869105712000, 19262120149391220000, 916763612521908006000, 44440565510927197408500, 2189466044883038600910000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..300 FORMULA a(n) ~ 64^(n+1) / (Pi^(3/2) * n^(9/2)). - Vaclav Kotesovec, Aug 25 2014 MAPLE a:= proc(n) option remember; `if`(n=0, 2,       8*(2*n-1)*(2*n+1)*(2*n+3) *a(n-1) /((n+1)*(n+2)*(n+3)))     end: seq(a(n), n=0..20);  # Alois P. Heinz, Oct 20 2013 CROSSREFS Cf. A000108. Sequence in context: A171214 A213955 A091990 * A059475 A156296 A003046 Adjacent sequences:  A014225 A014226 A014227 * A014229 A014230 A014231 KEYWORD nonn AUTHOR STATUS approved

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Last modified January 21 19:59 EST 2019. Contains 319350 sequences. (Running on oeis4.)