A279294 Number of permutations of [n] having exactly five (possibly overlapping) doubledescents.

1, 14, 597, 11486, 265354, 5307274, 110325975, 2250025170, 46909998946, 990648740298, 21419845540563, 473829924582378, 10757656204264520, 250739074393237162, 6005432933786523655, 147819656394632180730, 3739797338380838531829, 97237232835306526768108

Offset: 7

Author

Alois P. Heinz, Dec 09 2016

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 7..461

Crossrefs

Column k=5 of A162975.