A217019 First differences of A128301.

2, 6, 8, 23, 16, 34, 24, 50, 89, 36, 115, 80, 49, 101, 149, 190, 58, 202, 140, 79, 231, 159, 270, 371, 193, 103, 216, 113, 212, 804, 260, 391, 151, 667, 148, 431, 472, 318, 486, 507, 153, 870, 169, 365, 185, 1145, 1214, 405, 207, 434, 614, 218, 1135, 703, 721

Offset: 1

Author

Zak Seidov, Sep 24 2012

Keywords

• nonn

Comments

The sequence is of chaotic behavior and unbound. Exactly as in A050216 (see comment by T. D. Noe over there), the lines in the graph correspond to prime gaps of 2, 4, 6,...

Links

• Zak Seidov, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000879, A050216, A128301, A165144.

Cf. A001248 (primes squared), A001358 (semiprimes).

Formula

a(n) = A165144(n) + 1. - Flávio V. Fernandes, Nov 19 2020