A057928 Position at which 2^n occurs in A057926, or -1 if it does not occur.

0, -1, 2, 3, 6, 9, 15, 27, 36, 51, 87, 135, 243, 315, 531, 735, 969, 1707, 2679, 3831, 6363, 9663, 14559, 23091, 33045, 45999, 77523, 120471, 177639, 252717, 405321, 554037, 795831, 1335087, 1819527, 2491233, 4183467, 5920215, 8051991, 12530967, 20132061

Offset: 0

Author

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

Keywords

• easy
• sign

Crossrefs

Cf. A057926, A057927.

Extensions

More terms from Sean A. Irvine, Jul 12 2022