A057927 -id:A057927 - cp's OEIS frontend

A057926 a(0) = 1, a(1) = 3, a(n) = smallest number such that sequence b(n) = a(n) OR a(n+1) is strictly monotonically increasing.

1, 3, 4, 8, 5, 10, 16, 11, 20, 32, 21, 34, 24, 35, 28, 64, 29, 66, 32, 67, 36, 72, 37, 74, 48, 75, 52, 128, 53, 130, 56, 131, 60, 192, 61, 194, 256, 195, 260, 200, 261, 202, 272, 203, 276, 224, 277, 226, 280, 227, 284, 512, 285, 514, 288, 515, 292, 520, 293, 522, 304

Offset: 0

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

			See example in A051145.

Cf. A051145, A057927, A057928.

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

Original entry on oeis.org

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

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

Cf. A057926, A057927.

More terms from Sean A. Irvine, Jul 12 2022

cp's OEIS Frontend

A057926 a(0) = 1, a(1) = 3, a(n) = smallest number such that sequence b(n) = a(n) OR a(n+1) is strictly monotonically increasing.

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

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