A280698 Greatest Lucas number that is a proper divisor of the n-th Lucas number, a(1) = 1.

1, 1, 2, 1, 1, 3, 1, 1, 4, 3, 1, 7, 1, 3, 11, 1, 1, 18, 1, 7, 29, 3, 1, 47, 11, 3, 76, 7, 1, 123, 1, 1, 199, 3, 29, 322, 1, 3, 521, 47, 1, 843, 1, 7, 1364, 3, 1, 2207, 29, 123, 3571, 7, 1, 5778, 199, 47, 9349, 3, 1, 15127, 1, 3, 24476, 1, 521, 39603, 1, 7, 64079, 843, 1, 103682, 1, 3, 167761, 7, 199, 271443, 1, 2207, 439204, 3, 1, 710647, 3571, 3, 1149851, 47, 1

Offset: 1

Author

Antti Karttunen, Jan 11 2017

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..521

Crossrefs

Cf. A000032, A000204, A105800, A280696, A280699.

Programs

Scheme

(define (A280698 n) (A280696 (A000204 n)))

Formula

a(n) = A280696(A000204(n)).