A133914 Row sums of triangle A133913.

1, 3, 5, 11, 23, 44, 89, 177, 355, 711, 1420, 2841, 5683, 11367, 22731, 45463, 90925, 181851, 363703, 727404, 1454809, 2909617, 5819235, 11638471, 23276940, 46553881, 93107763, 186215527, 372431051, 744862103, 1489724205, 2979448411, 5958896823, 11917793644

Offset

1,2

Links

Table of n, a(n) for n=1..34.

Formula

a(n) = 2 * a(n-1) + A133912(n). - Jack W Grahl, Oct 11 2022

Example

a(4) = 11 = sum of row 4 terms of triangle A133913: (1 + 4 + 4 + 2).
a(4) = 11 = 2*a(3) + A133912(4) = 2*5 + 1, where A133912 = (1, 1, -1, 1, 1, -2, 1, -1, ...), first finite difference row of A007001.

Crossrefs

Cf. A007001, A133912, A133913.

Sequence in context: A347287 A146276 A155753 * A169913 A260239 A023223

Adjacent sequences: A133911 A133912 A133913 * A133915 A133916 A133917

Keyword

nonn

Author

Gary W. Adamson, Sep 28 2007

Extensions

More terms from Jack W Grahl, Oct 11 2022

Status

approved