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 A243233 Number of isoscent sequences of length n with exactly seven ascents. 2
 436, 45146, 1830826, 45369299, 826196076, 12168531813, 153430719591, 1718168937922, 17525279293159, 165802561604726, 1474718822704304, 12459599973722036, 100805357136035992, 786035745070774366, 5938016635175121413, 43645066989439738813, 313228673357655892678 (list; graph; refs; listen; history; text; internal format)
 OFFSET 12,1 LINKS Joerg Arndt and Alois P. Heinz, Table of n, a(n) for n = 12..100 MAPLE b:= proc(n, i, t) option remember; `if`(n<1, 1, expand(add( `if`(j>i, x, 1) *b(n-1, j, t+`if`(j=i, 1, 0)), j=0..t+1))) end: a:= n-> coeff(b(n-1, 0\$2), x, 7): seq(a(n), n=12..35); CROSSREFS Column k=7 of A242351. Sequence in context: A255777 A283928 A278176 * A216988 A190828 A084293 Adjacent sequences: A243230 A243231 A243232 * A243234 A243235 A243236 KEYWORD nonn AUTHOR Joerg Arndt and Alois P. Heinz, Jun 01 2014 STATUS approved

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Last modified June 25 11:48 EDT 2024. Contains 373701 sequences. (Running on oeis4.)