A347394 Positions of 4's in A347381.

21, 26, 30, 32, 33, 36, 37, 40, 42, 44, 48, 49, 50, 54, 60, 65, 75, 80, 84, 90, 91, 112, 120, 125, 126, 153, 162, 175, 176, 198, 208, 220, 231, 252, 272, 275, 304, 325, 343, 368, 400, 425, 475, 546, 575, 725, 765, 775, 11132, 12750, 13167, 31262, 46893, 55660, 63825, 78155, 93500, 171171, 191301, 406406, 483771, 609609

Offset: 1

Author

Antti Karttunen, Aug 31 2021

Keywords

• nonn

Comments

Question: Why the sudden rarification of terms after a(48) = 775?

Links

• Index entries for sequences computed from indices in prime factorization
• Index entries for sequences related to sigma(n)

Crossrefs

Cf. A347381.

Cf. also A336702, A347391, A347392, A347393.