A379811 a(n) = index of 2*prime(n) in A381019.

7, 23, 47, 79, 123, 223, 325, 364, 630, 910, 1034, 1310, 1610, 1857, 2219, 2819, 3378, 3979, 4499, 4773, 5057, 5790, 6899, 7581, 9226, 9429, 10225, 11459, 12329, 12781, 15890, 16910, 18506, 19887, 22211, 22514, 23738, 27231, 27899, 29602, 32055, 32418, 37255, 38031

Offset: 1

Author

N. J. A. Sloane, Feb 15 2025

Keywords

• nonn

Examples

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

Crossrefs

Cf. A381019, A381118.

Extensions

More terms from Michael De Vlieger, Feb 15 2025.