A062549 a(n) is the smallest number m such that m! is divisible by the left factorial !n (A003422).

1, 2, 4, 5, 17, 11, 23, 2957, 23117, 204557, 2018957, 37313, 296797, 39229, 622561, 1832213, 87616043, 2462521469, 17209100320681, 5207129, 2558906768309, 135954526571, 85412472868721, 3075880875779

Offset

0,2

Comments

Conjecture: a(n) is the largest prime factor of !n for all n > 2. - Sean A. Irvine, Apr 01 2023

Links

Table of n, a(n) for n=0..23.

Example

!4 = 1+1+2+6+24 = 34. The smallest value of n such that n! is divisible by 34 is 17!, so a(4)=17

Crossrefs

Sequence in context: A250545 A070917 A038757 * A169602 A092051 A065063

Adjacent sequences: A062546 A062547 A062548 * A062550 A062551 A062552

Keyword

nonn

Author

Jonathan Ayres (jonathan.ayres(AT)btinternet.com), Nov 22 2001

Status

approved