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Positive even numbers that cannot be written as 3^i (i >= 1) plus a prime.
2

%I #13 May 29 2022 18:07:16

%S 2,4,18,24,36,42,48,54,60,66,72,78,90,96,102,108,114,120,126,132,138,

%T 144,150,156,162,168,174,180,186,192,198,204,210,216,222,228,234,240,

%U 252,258,264,270,276,282,288,294,300,306,312,318,324,328,330,336,342,348,354,360,366

%N Positive even numbers that cannot be written as 3^i (i >= 1) plus a prime.

%C Indices of zeros in A350628 multiplied by 2.

%Y Cf. A006285, A058517, A350628, A350630, A350957, A350958.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Feb 05 2022