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Even numbers neither in A000010 nor in A001615.
1

%I #36 Nov 30 2024 06:26:49

%S 26,34,50,76,86,94,118,122,124,134,142,146,154,170,188,202,206,214,

%T 218,236,244,246,254,266,274,286,290,298,302,322,326,334,340,362,364,

%U 370,376,386,394,404,406,412,426,428,436,446,454,470,472,482,484,494,514,516,518,526

%N Even numbers neither in A000010 nor in A001615.

%H Amiram Eldar, <a href="/A307033/b307033.txt">Table of n, a(n) for n = 1..10000</a>

%e 26 is a term because it is not a term of A000010 nor is it a term of A001615.

%e 34 is a term because it is not a term of A000010 nor is it a term of A001615.

%e 14 is not a term because, although it is not a term of A000010, it is a term of A001615.

%o (PARI) dpsi(n) = n * sumdivmult(n, d, issquarefree(d)/d);

%o isnotpsi(n) = for (k=1, n-1, if (dpsi(k) == n, return(0));); return (1);

%o isok(n) = !(n%2) && (!istotient(n) && isnotpsi(n)); \\ _Michel Marcus_, Mar 22 2019

%Y Cf. A000010, A001615, A002202, A203444.

%Y Intersection of A005277 and A307055.

%K nonn

%O 1,1

%A _Torlach Rush_, Mar 20 2019

%E More terms from _Michel Marcus_, Mar 22 2019