A138286 a(n) = A058162(n) / A000688(n).

1, 1, 1, 2, 6, 60, 120, 640, 3780, 90720, 362880, 6652800, 39916800, 1037836800, 10897286400, 53137244160, 1307674368000, 33345696384000, 355687428096000, 10137091700736000, 202741834014720000, 5109094217170944000, 51090942171709440000, 1641397888183173120000, 16157510461803110400000

Offset

1,4

Links

Table of n, a(n) for n=1..25.

Crossrefs

Cf. A058162, A000688.

Sequence in context: A074167 A083787 A347979 * A355286 A308532 A102290

Adjacent sequences: A138283 A138284 A138285 * A138287 A138288 A138289

Keyword

nonn

Author

Artur Jasinski, Mar 12 2008

Extensions

a(16) corrected by and a(22) onwards from Georg Fischer, Nov 26 2021

Status

approved