A023491 a(n) = b(n) + d(n), where b(n) = (n-th Fibonacci number > 1) and d(n) = (n-th non-Lucas number).

4, 8, 11, 16, 22, 31, 46, 68, 103, 159, 249, 394, 629, 1007, 1618, 2606, 4204, 6789, 10971, 17737, 28684, 46396, 75055, 121424, 196450, 317844, 514263, 832075, 1346305, 2178346, 3524616, 5702926, 9227505, 14930393, 24157859, 39088212, 63246030, 102334200

Offset

0,1

Links

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

Formula

a(n) = A000045(n+3)+A090946(n+2). - R. J. Mathar, Feb 01 2019

Crossrefs

Sequence in context: A311068 A311069 A311070 * A311071 A131872 A311072

Adjacent sequences: A023488 A023489 A023490 * A023492 A023493 A023494

Keyword

nonn

Author

Clark Kimberling

Extensions

Corrected by Clark Kimberling, Jan 29 2019

Status

approved