



26, 34, 50, 76, 86, 94, 118, 122, 124, 134, 142, 146, 154, 170, 188, 202, 206, 214, 218, 236, 244, 246, 254, 266, 274, 286, 290, 298, 302, 322, 326, 334, 340, 362, 364, 370, 376, 386, 394, 404, 406, 412, 426, 428, 436, 446, 454, 470, 472, 482, 484, 494, 514, 516, 518, 526
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..56.


EXAMPLE

26 is a term because it is not a term of A000010 nor is it a term of A001615.
34 is a term because it is not a term of A000010 nor is it a term of A001615.
14 is not a term because, although it is not a term of A000010, it is a term of A001615.


PROG

(PARI) dpsi(n) = n * sumdivmult(n, d, issquarefree(d)/d);
isnotpsi(n) = for (k=1, n1, if (dpsi(k) == n, return(0)); ); return (1);
isok(n) = !(n%2) && (!istotient(n) && isnotpsi(n)); \\ Michel Marcus, Mar 22 2019


CROSSREFS

Cf. A000010, A001615, A002202, A203444.
Intersection of A005277 and A307055.
Sequence in context: A167705 A061673 A072571 * A058763 A291158 A326733
Adjacent sequences: A307030 A307031 A307032 * A307034 A307035 A307036


KEYWORD

nonn


AUTHOR

Torlach Rush, Mar 20 2019


EXTENSIONS

More terms from Michel Marcus, Mar 22 2019


STATUS

approved



