A050071 a(n) = a(n-1)+a(m), where m=2n-2-2^(p+1) and 2^p= 4.

1, 3, 4, 7, 14, 17, 24, 41, 82, 85, 92, 109, 150, 235, 344, 579, 1158, 1161, 1168, 1185, 1226, 1311, 1420, 1655, 2234, 3395, 4580, 5891, 7546, 10941, 16832, 27773, 55546, 55549, 55556, 55573, 55614, 55699, 55808, 56043, 56622

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Links

• Ivan Neretin, Table of n, a(n) for n = 1..8193

Crossrefs

Cf. A050027, A050031, A050035, A050039, A050043, A050047, A050051, A050055, A050059, A050063, A050067 (similar, but with different initial conditions).

Programs

Mathematica

Fold[Append[#1, #1[[-1]] + #1[[#2]]] &, {1, 3, 4}, Flatten@Table[2 k, {n, 5}, {k, 2^n}]] (* Ivan Neretin, Sep 07 2015 *)