A022873 a(n) = [ a(n-1)/a(1) + a(n-1)/a(2) + ... + a(n-1)/a(n-1) ] for n >= 3, with initial terms 2,1.

2, 1, 1, 2, 6, 19, 61, 197, 638, 2068, 6706, 21747, 70525, 228714, 741726, 2405442, 7800930, 25298683, 82044498, 266073128, 862884304, 2798363473, 9075188983, 29431149984, 95446231592, 309535411633, 1003833985448

Offset

1,1

Links

Table of n, a(n) for n=1..27.

Crossrefs

Sequence in context: A134830 A319031 A022874 * A323739 A122160 A058316

Adjacent sequences: A022870 A022871 A022872 * A022874 A022875 A022876

Keyword

nonn

Author

Clark Kimberling

Extensions

Name clarified by Robert C. Lyons, Feb 11 2025

Status

approved