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A293556 Records in A243822. 2
0, 1, 2, 4, 10, 11, 14, 15, 16, 20, 21, 29, 52, 61, 64, 72, 91, 99, 100, 121, 142, 151, 156, 251, 263, 281, 290, 334, 347, 404, 415, 441, 455, 503, 519, 521, 581, 595, 627, 645, 695, 1097, 1160, 1189, 1193, 1221, 1242, 1430, 1501, 1535, 1683, 1760, 1849, 2048 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

See A293555 for comments, linked tables, and conjecture. - Michael De Vlieger, Nov 17 2017

LINKS

Michael De Vlieger, Table of n, a(n) for n = 1..110

MATHEMATICA

With[{s = Table[Count[Range@ n, _?(PowerMod[n, #, #] == 0 &)] - DivisorSigma[0, n], {n, 10^4}]}, Union@ FoldList[Max, s]] (* Michael De Vlieger, Oct 22 2017 *)

CROSSREFS

Cf. A000005, A010846, A243822, A244053, A293555.

Sequence in context: A243622 A178713 A136818 * A029984 A101519 A227204

Adjacent sequences:  A293553 A293554 A293555 * A293557 A293558 A293559

KEYWORD

nonn

AUTHOR

Michael De Vlieger, Oct 22 2017

STATUS

approved

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Last modified September 19 03:51 EDT 2020. Contains 337175 sequences. (Running on oeis4.)