A161494 - OEIS

A161494

The square roots of the terms of A161493.

1, 2, 3, 4, 8, 10, 12, 14, 15, 18, 21, 22, 24, 25, 26, 30, 32, 33, 36, 39, 42, 44, 45, 46, 48, 51, 56, 57, 58, 62, 64, 65, 66, 69, 70, 75, 76, 78, 80, 81, 82, 86, 87, 93, 94, 96, 99, 102, 104, 108, 111, 114, 115, 116, 118, 119, 122, 123, 124, 129, 130, 132, 133, 134, 135

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Ivan Neretin, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = A000196(A161493(n)).

MATHEMATICA

Select[Range[150], OddQ@Quotient[#^2, DivisorSigma[0, #^2]] &] (* Ivan Neretin, Mar 23 2017 *)

CROSSREFS

Cf. A000196, A161493.

Sequence in context: A279000 A073465 A174816 * A356641 A296161 A121612

Adjacent sequences: A161491 A161492 A161493 * A161495 A161496 A161497

KEYWORD

nonn

AUTHOR

John W. Layman, Jun 12 2009

STATUS

approved