A171559 Powers of 2 (cf. A000079) with 1 replaced by 3.

3, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 1073741824, 2147483648, 4294967296, 8589934592

Offset: 0

Author

Paul Curtz, Dec 11 2009

Keywords

• nonn
• less

Comments

First differences of A171449.

Links

• Index entries for linear recurrences with constant coefficients, signature (2).

Formula

a(n+1)-a(n) = A171449(n).

a(n) + A171449(n) = A000079(n+1) = 2*A000079(n).

G.f.: (3-4*x)/(1-2*x).

Extensions

Edited by R. J. Mathar and N. J. A. Sloane, Dec 15 2009