A061014 - OEIS

A061014

a(n) is the smallest number k such that k! contains k exactly n times.

0, 1, 37, 313, 80, 99, 586, 743, 5972, 9253, 8736, 9789

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,3

COMMENTS

Any further terms have k > 52000. - Sean A. Irvine, Jan 16 2023

LINKS

EXAMPLE

a(3)=313 because in 313! 313 appears exactly 3 times.

MATHEMATICA

a = Table[ -1, {12}]; Do[b = Length[ StringPosition[ ToString[n! ], ToString[n]]]; If[a[[b+1]] == -1, a[[b+1]] = n]], {n, 0, 15000} ]; a

CROSSREFS

KEYWORD

nonn,base,more,less

AUTHOR

EXTENSIONS

More terms from Robert G. Wilson v, Jan 09 2002

STATUS

approved