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A231878 Numbers n such that bigomega(n)^2 (cf. A001222) divides n. 2
2, 3, 4, 5, 7, 11, 13, 16, 17, 18, 19, 23, 27, 29, 31, 37, 41, 43, 45, 47, 53, 59, 61, 63, 67, 71, 73, 79, 83, 89, 97, 99, 101, 103, 107, 109, 113, 117, 127, 131, 137, 139, 144, 149, 151, 153, 157, 163, 167, 171, 173, 179, 181, 191, 193, 197, 199, 200, 207, 211, 216, 223, 227, 229, 233, 239, 241, 251, 256, 257, 261, 263 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Contains all primes. - Ivan Neretin, Apr 05 2016

LINKS

Ivan Neretin, Table of n, a(n) for n = 1..13517 (all terms up to 10^5)

MATHEMATICA

Select[Range[2, 265], Divisible[#, PrimeOmega[#]^2] &] (* Ivan Neretin, Apr 05 2016 *)

PROG

(PARI) isok(n) = !(n % bigomega(n)^2); \\ Michel Marcus, Apr 05 2016

CROSSREFS

Cf. A001221, A075592, A185307, A001222, A074946, A134334, A231879 (complement).

Sequence in context: A055464 A139316 A062972 * A285304 A036844 A284696

Adjacent sequences:  A231875 A231876 A231877 * A231879 A231880 A231881

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 17 2013

STATUS

approved

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Last modified September 26 02:28 EDT 2020. Contains 337346 sequences. (Running on oeis4.)