A057931 Positions at which powers of 2 occur in A057929. (Or -1 if it does not occur.)

-1, 0, -1, 2, 5, 11, 23, 32, 47, 83, 131, 239, 311, 527, 731, 965, 1703, 2675, 3827, 6359, 9659, 14555, 23087, 33041, 45995, 77519, 120467, 177635, 252713, 405317, 554033, 795827, 1335083, 1819523, 2491229, 4183463, 5920211, 8051987, 12530963, 20132057

Offset: 0

Author

Larry Reeves (larryr(AT)acm.org), Oct 03 2000

Keywords

• easy
• sign

Crossrefs

Cf. A057929, A057930.

Extensions

More terms from Sean A. Irvine, Jul 12 2022