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A376108 Non-Leonardo numbers.

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