A376196 Index in A375564 where n-th group of successive primes ends.

3, 9, 21, 45, 92, 177, 351, 702, 1379, 2724, 5412, 10787, 21502, 42958, 85791, 171441, 342216, 683462, 1365580, 2729447, 5456194, 10908253, 21812343, 43616683, 87223016, 174430392

Offset: 1

Author

Scott R. Shannon and N. J. A. Sloane, Oct 02 2024

Keywords

• nonn
• more

Crossrefs

Cf. A375564, A376192, A376193, A376195, A376197.

Formula

It is immediate from the definitions that A376195(n) = a(n) - A376192(n) + 1. E.g. for the third run of primes, 21 - 18 + 1 = 4 = A376195(3).

Extensions

a(24)-a(26) by Scott R. Shannon, Oct 02 2024