A023493 a(n) = b(n) + d(n), where b(n) = (n-th Lucas number > 1) and d(n) = (n-th non-Lucas number).

5, 9, 13, 19, 27, 39, 59, 89, 137, 214, 338, 538, 862, 1384, 2228, 3593, 5801, 9373, 15152, 24502, 39630, 64107, 103712, 167792, 271475, 439237, 710681, 1149886, 1860534, 3010386, 4870885, 7881235, 12752083, 20633280, 33385324, 54018564, 87403847, 141422369

Offset

0,1

Links

Table of n, a(n) for n=0..37.

Formula

a(n) = A000032(n+2)+A090946(n+2). - R. J. Mathar, Feb 01 2019

Crossrefs

Sequence in context: A314771 A314772 A314773 * A314774 A314775 A314776

Adjacent sequences: A023490 A023491 A023492 * A023494 A023495 A023496

Keyword

nonn

Author

Clark Kimberling

Extensions

Corrected by Clark Kimberling, Jan 29 2019

Status

approved