A061126 Number of degree-n permutations of order exactly 16.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1307674368000, 22230464256000, 400148356608000, 5068545850368000, 101370917007360000, 1490152480008192000, 24977793950613504000, 343667682838351872000

Offset

1,16

Links

Table of n, a(n) for n=1..23.

Formula

E.g.f.: - exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8) + exp(x + 1/2*x^2 + 1/4*x^4 + 1/8*x^8 + 1/16*x^16).

Crossrefs

Cf. A000085, A001470, A001472, A052501, A053496 - A053505, A001189, A001471, A001473, A061121 - A061128.

Sequence in context: A260250 A088280 A011526 * A172537 A172717 A258444

Adjacent sequences: A061123 A061124 A061125 * A061127 A061128 A061129

Keyword

easy,nonn

Author

Vladeta Jovovic, Apr 14 2001

Status

approved