A376192 Indices n where a run of primes begins in A375564.

2, 8, 18, 40, 84, 162, 321, 649, 1286, 2550, 5096, 10188, 20406, 40883, 81932, 164190, 328490, 657509, 1316258, 2635513, 5276876, 10565366, 21155215, 42355195, 84797387, 169759097

Offset: 1

Author

N. J. A. Sloane, Sep 26 2024

Keywords

• nonn
• more

Examples

			A375564 begins 1, 2, 3, 4, 6, 8, 10, 5, 7, 9, 12, ..., so the present sequence begins 2, 8, ...
		

Crossrefs

Cf. A020714, A375564, A376191, A376193.

Formula

a(n) is roughly equal to 5*2^(n-1) (or A020714[n-1]).

Extensions

a(16)-a(19) from Scott R. Shannon, Sep 27 2024

a(20)-a(26) from Scott R. Shannon, Oct 02 2024