A047021 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A047021

a(n) = Sum_{i=0..n} T(i,n-i) where T is given by A047020.

0

1, 2, 3, 5, 9, 18, 28, 53, 101, 195, 390, 704, 1371, 2676, 5253, 10506, 19840, 39056, 76968, 152168, 304336, 586864, 1161577, 2300544, 4565558, 9131116, 17813324, 35369544, 70256203, 139745471, 279490942, 549138068, 1092533184

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..32.

CROSSREFS

Sequence in context: A064769 A320641 A365640 * A201359 A369392 A047031

Adjacent sequences: A047018 A047019 A047020 * A047022 A047023 A047024

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

a(26) corrected by Sean A. Irvine, May 10 2021

STATUS

approved