A280688 - OEIS

%I #8 Sep 11 2025 21:28:53

%S 1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,3,1,2,1,5,1,1,1,8,1,1,2,13,1,5,1,21,1,

%T 1,1,34,1,1,1,55,1,13,1,89,5,1,1,144,1,5,1,233,1,34,1,377,1,1,1,610,1,

%U 1,13,987,1,89,1,1597,1,13,1,2584,1,1,5,4181,1,233,1,6765,34,1,1,10946,1,1,1,17711,1,610,1,28657,1,1,1,46368,1,13,89,75025,1,1597

%N a(n) = A000045(A054576(n))= A280686(A105800(n)).

%H Antti Karttunen, <a href="/A280688/b280688.txt">Table of n, a(n) for n = 1..987</a>

%F a(n) = A000045(A054576(n)).

%F a(n) = A280686(A105800(n)).

%F a(n) = A105800(A032742(n)).

%o (Scheme) ;; Two alternatives.

%o (define (A280688 n) (A280686 (A105800 n)))

%o (define (A280688 n) (A105800 (A032742 n)))

%Y Cf. A000045, A032742, A054576, A105800, A280686, A280689.

%K nonn

%O 1,12

%A _Antti Karttunen_, Jan 11 2017