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A243232 Number of isoscent sequences of length n with exactly six ascents. 2
7, 1422, 61966, 1419901, 22720053, 288205741, 3105573804, 29654436325, 258037473373, 2086374808221, 15899245803550, 115413232143719, 804608004076949, 5421939004211551, 35497436998569721, 226735499246904329, 1417770877081098164, 8703370306993200829 (list; graph; refs; listen; history; text; internal format)
OFFSET
10,1
LINKS
Joerg Arndt and Alois P. Heinz, Table of n, a(n) for n = 10..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, 6):
seq(a(n), n=10..35);
CROSSREFS
Column k=6 of A242351.
Sequence in context: A214010 A145451 A144676 * A362060 A265963 A191957
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Jun 01 2014
STATUS
approved

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Last modified May 22 19:48 EDT 2024. Contains 372758 sequences. (Running on oeis4.)