A307033 Even numbers neither in A000010 nor in A001615.

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

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, n-1,  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