A181228 Number of length n sequences p(i=0..n-1) with 0<=p(i)<=i and having exactly 4 maxima.

0, 0, 0, 0, 0, 0, 0, 476, 20956, 541960, 10783530, 183084580, 2796467584, 39641212284, 532014841490, 6852097042820, 85509456576162, 1041222110654522, 12436416067831144, 146290172122139436, 1700035652369320714

Offset: 1

Author

R. H. Hardin, Oct 10 2010

Keywords

• nonn

Comments

Column 4 of A181229.

Links

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

Crossrefs

Cf. A181229.