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A244722
Number of compositions of n with exactly 10 transitions between different parts.
2
1, 12, 106, 677, 3494, 15072, 56687, 189836, 578105, 1621690, 4241828, 10434473, 24323694, 54053172, 115100757, 235866109, 466850629, 895363599, 1668452274, 3028132617, 5364010992, 9291348726, 15763537852, 26234025046, 42882816586, 68933785785, 109087903602
OFFSET
16,2
LINKS
MAPLE
b:= proc(n, v) option remember; `if`(n=0, [1, 0$10],
add(`if`(v in [0, i], b(n-i, `if`(i<=n-i, i, -1)),
[0, b(n-i, `if`(i<=n-i, i, -1))[1..10][]]), i=1..n))
end:
a:= n-> b(n, 0)[11]:
seq(a(n), n=16..60);
CROSSREFS
Column k=10 of A238279.
Sequence in context: A016223 A027142 A090816 * A144133 A089396 A218111
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Jul 04 2014
STATUS
approved