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

1,1

Links

Table of n, a(n) for n=1..26.

Formula

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

Example

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.

Sequence in context: A064705 A377676 A220909 * A058858 A236633 A212518

Adjacent sequences: A376189 A376190 A376191 * A376193 A376194 A376195

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 26 2024

Extensions

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

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

Status

approved