A248902 Numbers k such that A248891(k) = 2.

6, 7, 8, 10, 19, 21, 23, 24, 28, 33, 72, 80, 270, 271, 323, 404, 2058, 4118, 5986, 7118, 13387, 16041, 20164, 30024, 30025, 76955, 151818, 622213, 1012549, 2482211, 2482212, 6330859, 9988608, 14984623, 105181797, 180589455

Offset: 1

Author

Jahangeer Kholdi and Farideh Firoozbakht, Nov 22 2014

Keywords

• nonn
• more

Comments

If k is in {6, 7, 23, 270, 30024, 2482211, ...} then both numbers k and k+1 are in the sequence. It seems that this set has more members.

Crossrefs

Cf. A001359, A248891, A248901.

Extensions

a(27)-a(36) from Jinyuan Wang, Nov 28 2020