1/16 the number of permutations of 0..n having exactly 3 maxima.

A130651

1/16 the number of permutations of 0..n having exactly 3 maxima.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =17a(6) =180a(7) =1536a(8) =11616a(9) =81552a(10) =545536a(11) =3532544a(12) =22368000a(13) =139434240a(14) =859634688a(15) =5258379264a(16) =31986270208a(17) =193796182016

External references