A354140 - OEIS

%I #6 May 18 2022 16:59:50

%S 1,3,5,6,8,10,11,12,13,16,17,18,20,21,22,23,24,25,26,27,28,30,33,34,

%T 35,36,37,38,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,

%U 61,62,64,66,67,68,69,70,71,72,73,74,75,76,77,78,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109

%N a(n) = index where prime(n) appears in A353730

%C Here prime(n) means the n-th prime in 2, 3, 5, 7, ..., not the n-th term of A353730 that happens to be a prime.

%e A353730(8) = 11 = prime(5), so a(5) = 8.

%Y Cf. A353730, A353734.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, May 18 2022