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

Offset

0,3

Comments

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

Links

Table of n, a(n) for n=0..11.

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

Cf. A067109.

Sequence in context: A165373 A165292 A114785 * A130450 A271184 A217117

Adjacent sequences: A061011 A061012 A061013 * A061015 A061016 A061017

Keyword

nonn,base,more,less

Author

Michel ten Voorde, May 22 2001

Extensions

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

Status

approved