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%I #4 Sep 11 2024 00:35:11
%S 2,4,6,7,8,10,11,12,13,14,16,17,18,19,20,21,22,23,24,26,27,28,29,30,
%T 31,32,33,34,35,36,37,38,39,40,42,43,44,45,46,47,48,49,50,51,52,53,54,
%U 55,56,57,58,59,60,61,62,63,64,65,66,68,69,70,71,72,73,74
%N Non-Leonardo numbers.
%C A299174 UNION A005408(A001690 - 1).
%o (Python)
%o def A376108(n):
%o def f(x):
%o a, b, c = 1, 1, n
%o while True:
%o if b > x: return c
%o a, b = b, a+b+1
%o c +=1
%o m, k = n, f(n)
%o while m != k: m, k = k, f(k)
%o return m
%Y Cf. A001595, A299174, A001690.
%K nonn,easy
%O 1,1
%A _Chai Wah Wu_, Sep 10 2024