A214983 Antidiagonal sums of the array A028412.

1, 2, 6, 16, 51, 195, 932, 5651, 43641, 428905, 5362388, 85303080, 1726416461, 44444215422, 1455335603434, 60619535173748, 3211914908993651, 216474718772864071, 18558435268379931580, 2023812522812259857355

Offset

1,2

Links

Clark Kimberling, Table of n, a(n) for n = 1..100

Formula

Sum{F(m*(n+1-m))/F(m), m = 1,2,...,n}, where F = A000045 (Fibonacci numbers)

Example

a(1) = 1
a(2) = 1 + 1
a(3) = 2 + 3 + 1

Mathematica

(See A028412.)

Crossrefs

Cf. A000045, A028412.

Sequence in context: A339844 A258797 A360232 * A367389 A214833 A263593

Adjacent sequences: A214980 A214981 A214982 * A214984 A214985 A214986

Keyword

nonn

Author

Clark Kimberling, Oct 28 2012

Status

approved