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A256265
Sums of two successive terms of A256264.
7
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
1,2
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.
FORMULA
a(n) = A256264(n) + A256264(n-1).
KEYWORD
nonn
AUTHOR
Omar E. Pol, Apr 10 2015
STATUS
approved