A379811 - OEIS

%I #6 Feb 16 2025 21:55:19

%S 7,23,47,79,123,223,325,364,630,910,1034,1310,1610,1857,2219,2819,

%T 3378,3979,4499,4773,5057,5790,6899,7581,9226,9429,10225,11459,12329,

%U 12781,15890,16910,18506,19887,22211,22514,23738,27231,27899,29602,32055,32418,37255,38031

%N a(n) = index of 2*prime(n) in A381019.

%e A381019(47) = 10 = 2*prime(3), so a(3) = 47.

%Y Cf. A381019, A381118.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Feb 15 2025

%E More terms from _Michael De Vlieger_, Feb 15 2025.