A181226 - OEIS

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A181226

Number of length n sequences p(i=0..n-1) with 0<=p(i)<=i and having exactly 2 maxima

1

0, 0, 0, 3, 41, 383, 3073, 22835, 162517, 1127399, 7700835, 52118506, 350902046, 2356532130, 15813455692, 106160717591, 713555194577, 4804401287757, 32414156949765, 219174260505645, 1485378918978855, 10089794073161037

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

COMMENTS

Column 2 of A181229

LINKS

R. H. Hardin, Table of n, a(n) for n=1..200

CROSSREFS

Sequence in context: A057650 A280176 A322244 * A159249 A328509 A087544

Adjacent sequences: A181223 A181224 A181225 * A181227 A181228 A181229

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 10 2010

STATUS

approved