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A138286
a(n) = A058162(n) / A000688(n).
0
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
CROSSREFS
Sequence in context: A074167 A083787 A347979 * A355286 A308532 A102290
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