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A181228
Number of length n sequences p(i=0..n-1) with 0<=p(i)<=i and having exactly 4 maxima
1
0, 0, 0, 0, 0, 0, 0, 476, 20956, 541960, 10783530, 183084580, 2796467584, 39641212284, 532014841490, 6852097042820, 85509456576162, 1041222110654522, 12436416067831144, 146290172122139436, 1700035652369320714
OFFSET
1,8
COMMENTS
Column 4 of A181229
LINKS
CROSSREFS
Sequence in context: A205895 A235656 A264290 * A278286 A216141 A325822
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 10 2010
STATUS
approved