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A109640 Values of n which are incrementally the largest values of the function: Smallest number m such that n divides (10's complement factorial of m). 1
1, 2, 5, 11, 13, 19, 23, 31, 47, 97, 101, 113, 131, 151, 181, 227, 307, 457, 907, 1009, 1129, 1289 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

These are the indices of records in A109631. - R. J. Mathar, Feb 12 2008

LINKS

Table of n, a(n) for n=1..22.

MAPLE

A089186 := proc(n) 10^max(1, ilog10(n)+1)-n ; end: A110396 := proc(n) mul( A089186(i), i=1..n) ; end: A109631 := proc(n) local a; for a from 1 do if A110396(a) mod n = 0 then RETURN(a) ; fi ; od: end: A109640 := proc(n) option remember ; local nprev, aprev, a ; if n = 1 then RETURN(1); else nprev := A109640(n-1) ; aprev := A109631(nprev) ; for a from nprev+1 do if A109631(a) > aprev then RETURN(a) ; fi ; od; fi ; end: for n from 1 do printf("%d, ", A109640(n)) ; od: # R. J. Mathar, Feb 12 2008

CROSSREFS

Cf. A002034, A110396, A109631, A002034, A110396.

Sequence in context: A001915 A127437 A084792 * A191048 A105961 A045361

Adjacent sequences:  A109637 A109638 A109639 * A109641 A109642 A109643

KEYWORD

more,nonn,base

AUTHOR

Jason Earls, Aug 04 2005

EXTENSIONS

More terms from R. J. Mathar, Feb 12 2008

STATUS

approved

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Last modified January 20 23:20 EST 2019. Contains 319343 sequences. (Running on oeis4.)