A349974 a(n) = 1 + Sum_{k=0..n} (2*k - 1)*A349976(n, k).

0, 1, 5, 17, 53, 147, 389, 981, 2401, 5697, 13293, 30423, 68745, 153403, 339195, 743169, 1617857, 3497875, 7523697, 16102889, 34324847, 72875031, 154233691, 325388121, 684664081, 1436991619, 3009410483, 6289146455, 13119434889, 27319198507, 56799400255, 117916622547

Offset

0,3

Links

Table of n, a(n) for n=0..31.

Crossrefs

Cf. A349976, A349973.

Sequence in context: A176470 A240693 A278464 * A186254 A158896 A294781

Adjacent sequences: A349971 A349972 A349973 * A349975 A349976 A349977

Keyword

nonn

Author

Peter Luschny, Dec 10 2021, following a suggestion from Alois P. Heinz

Status

approved