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A212281 Minimal m>=1 such that n!/m+1 is prime. 8
1, 1, 1, 1, 2, 2, 3, 2, 2, 5, 6, 1, 8, 2, 5, 7, 2, 3, 26, 5, 8, 4, 16, 3, 8, 4, 10, 1, 13, 8, 2, 19, 4, 11, 11, 7, 3, 1, 12, 13, 4, 1, 24, 2, 8, 5, 9, 25, 16, 2, 12, 55, 26, 84, 17, 22, 44, 22, 37, 7, 48, 4, 37, 18, 7, 39, 16, 19, 7, 15, 19, 36, 30, 1, 14, 15 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..75.

MATHEMATICA

a[n_] := Block[{f=n!, j=1}, While[! PrimeQ[1+Floor[f/j]], j++]; j]; a/@Range[0, 75] (* Giovanni Resta, Feb 14 2013 *)

CROSSREFS

Sequence in context: A343534 A275383 A206762 * A225637 A185268 A279630

Adjacent sequences:  A212278 A212279 A212280 * A212282 A212283 A212284

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Feb 14 2013

EXTENSIONS

a(13)-a(75) from Giovanni Resta, Feb 14 2013

STATUS

approved

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Last modified September 17 18:29 EDT 2021. Contains 347489 sequences. (Running on oeis4.)