A133913 -id:A133913 - cp's OEIS frontend

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

Gary W. Adamson, Sep 28 2007

nonn

			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.

Cf. A007001, A133912, A133913.

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

More terms from Jack W Grahl, Oct 11 2022

A133912 First differences of A007001.

Original entry on oeis.org

1, 1, -1, 1, 1, -2, 1, -1, 1, 1, -2, 1, 1, 1, -3, 1, -1, 1, 1, -2, 1, -1, 1, 1, -2, 1, 1, 1, -3, 1, -1, 1, 1, -2, 1, 1, 1, -3, 1, 1, 1, 1, -4, 1, -1, 1, 1, -2, 1, -1, 1, 1, -2, 1, 1, 1, -3, 1, -1, 1, 1, -2, 1, -1, 1, 1, -2, 1, 1, 1, -3, 1, -1, 1, 1, -2, 1, 1, 1, -3, 1, 1, 1, 1, -4, 1, -1, 1, 1, -2, 1, -1, 1, 1, -2, 1, 1, 1, -3, 1, -1, 1, 1, -2, 1

Offset: 1

Gary W. Adamson, Sep 28 2007

sign

			a(5) = 1 = A007001(5) - A007001(4) = (3 - 2).

Cf. A007001, A133913, A133914.

More terms from Colin Barker, Apr 19 2015

cp's OEIS Frontend

A133914 Row sums of triangle A133913.

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