A256265 Sums of two successive terms of A256264.

1, 3, 7, 11, 15, 23, 35, 43, 47, 55, 67, 79, 95, 123, 155, 171, 175, 183, 195, 207, 223, 251, 283, 303, 319, 347, 387, 439, 503, 579, 651, 683, 687, 695, 707, 719, 735, 763, 795, 815, 831, 859, 899, 951, 1015, 1091, 1163, 1199, 1215, 1243, 1283, 1335, 1399, 1475, 1563, 1663, 1775, 1899, 2035, 2183, 2343, 2515, 2667, 2731

Offset: 1

Author

Omar E. Pol, Apr 10 2015

Keywords

• nonn

Comments

First differs from A139250 (the toothpick sequence) at a(27).

It appears that both sequences share infinitely many terms, for example: a(1)..a(26), a(31)..a(42), a(47)..a(50), a(63)..a(74), a(79)..a(82), etc.

The main entry for this sequence is A256263.

Crossrefs

Cf. A007583, A139250, A255747, A256260, A256261, A256263, A256264.

Formula

a(n) = A256264(n) + A256264(n-1).