A049618 a(n) = Sum_{i=0..floor(n/2)} T(2i,n-2i) where T is A049615.

0, 0, 2, 3, 9, 11, 22, 26, 43, 49, 74, 82, 115, 126, 168, 184, 239, 256, 322, 343, 421, 449, 544, 574, 683, 720, 846, 889, 1035, 1081, 1244, 1298, 1479, 1540, 1746, 1814, 2045, 2120, 2372, 2456, 2737, 2826, 3130, 3229, 3557, 3669, 4032, 4146, 4535, 4661, 5080

Offset

0,3

Links

Table of n, a(n) for n=0..50.

Crossrefs

Sequence in context: A110350 A057569 A177950 * A057292 A098016 A372073

Adjacent sequences: A049615 A049616 A049617 * A049619 A049620 A049621

Keyword

nonn

Author

Clark Kimberling

Extensions

More terms from Sean A. Irvine, Aug 05 2021

Status

approved