A130660 1/16 the number of permutations of 0..n having exactly 4 maxima.

0, 0, 0, 0, 0, 0, 17, 496, 8576, 115072, 1328336, 13899904, 135927040, 1266360320, 11385790720, 99682672640, 855303553024, 7226263666688, 60329459699712, 499027284295680

Offset: 0

Author

R. H. Hardin, Aug 11 2007

Keywords

• nonn

Crossrefs

Cf. A100575.

Formula

a(n) = A000517(n+1)/16. - R. J. Mathar, Mar 01 2015