



1, 2, 3, 4, 6, 8, 9, 10, 12, 16, 18, 20, 24, 30, 32, 36, 40, 48, 60, 64, 72, 80, 84, 90, 96, 100, 108, 120, 128, 144, 160, 168, 180, 192, 200, 216
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OFFSET

1,2


COMMENTS

Is this the same sequence as A002183, number of divisors of nth highly composite number?


LINKS

Table of n, a(n) for n=1..36.


MATHEMATICA

max = 10^6; (* b = A188550 *) b[n_] := Max @ Table[Length @ Select[ Table[ nd, {d, Divisors[nk] // Rest}], Mod[#, k] == 0&], {k, 2, Floor[ Sqrt[n] ]}]; A188591 = Reap[For[record = 0; k = 1; n = 1, n <= max, n++, bn = b[n]; If[bn > record, record = bn; Print["a(", k++, ") = b(", n, ") = ", bn]; Sow[bn]]]][[2, 1]] (* JeanFrançois Alcover, Feb 07 2016 *)


CROSSREFS

Cf. A188550, A188579.
Sequence in context: A067023 A227762 A303492 * A002183 A060306 A158614
Adjacent sequences: A188588 A188589 A188590 * A188592 A188593 A188594


KEYWORD

nonn,more


AUTHOR

Vladimir Shevelev, Apr 04 2011


EXTENSIONS

More terms from JeanFrançois Alcover, Feb 07 2016


STATUS

approved



