A186426 Antidiagonal sums of A177517.

1, 0, 1, 0, 1, 1, 1, 2, 3, 4, 6, 10, 15, 23, 36, 57, 90, 142, 225, 358, 571, 912, 1458, 2334, 3742, 6006, 9648, 15510, 24951, 40164, 64689, 104241, 168048, 271015, 437221, 705571, 1138934, 1838916, 2969746, 4796900, 7749561, 12521629, 20235080, 32704173, 52862781, 85455587, 138156111, 223375201, 361186480, 584058718, 944511360, 1527499074, 2470446924, 3995662918, 6462775233, 10453566628, 16909223601, 27352387053, 44246403940, 71576559073

Offset: 1

Author

Mats Granvik, Feb 21 2011

Keywords

• nonn

Comments

a(n+1)/a(n) tends to the golden ratio. Grows more slowly than the Fibonacci sequence. More complicated than the Fibonacci sequence.

a(n)=First differences of A186425.

Crossrefs

Cf. A001622, A177517, A186425.