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A181225 Number of length 2n sequences p(i=0..2n-1) with 0<=p(i)<=i and having exactly n maxima 1
2, 3, 26, 476, 14905, 708825, 47514180, 4264132468, 493337571005, 71476985762027, 12673922434134249, 2699365743596908540, 679965250748621333815, 199945129785484988046467, 67870868805277105224767736 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The 2n,n elements of A181229

LINKS

R. H. Hardin, Table of n, a(n) for n=1..135

CROSSREFS

Sequence in context: A178196 A258766 A056722 * A143876 A184506 A126203

Adjacent sequences:  A181222 A181223 A181224 * A181226 A181227 A181228

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 10 2010

STATUS

approved

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Last modified September 26 10:50 EDT 2022. Contains 356997 sequences. (Running on oeis4.)