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 A367369 a(n) = A340556(2*n, n), the central terms of the second order Eulerian numbers. 0
 1, 1, 22, 1452, 195800, 44765000, 15548960784, 7634832149392, 5036317938475648, 4297211671488276816, 4605775111899791292320, 6058134671618508819536768, 9595073255473201184093573376, 18012849924775292436074080925056, 39551575929026035832580350736305920 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..14. MAPLE A340556 := (n, k) -> `if`(k=0, k^n, combinat:-eulerian2(n, k-1)): seq(A340556(2*n, n), n = 0..14); CROSSREFS Indexing the second-order Eulerian numbers comes in three flavors: A008517 (following Riordan and Comtet), A201637 (following Graham, Knuth, and Patashnik) and indexing like in A340556 using the definition of Gessel and Stanley. Sequence in context: A055475 A348813 A160309 * A033526 A078399 A243478 Adjacent sequences: A367366 A367367 A367368 * A367370 A367371 A367372 KEYWORD nonn AUTHOR Peter Luschny, Nov 16 2023 STATUS approved

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Last modified September 18 08:29 EDT 2024. Contains 375997 sequences. (Running on oeis4.)