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A337637
Number of numbers k <= n such that both k and k+1 are in A020899.
8
0, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 10, 11, 11, 11, 11, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 15, 16, 16, 16, 16, 17, 18, 18, 18, 18, 18, 18, 18, 19, 20, 20, 20
OFFSET
0,3
REFERENCES
Anton Shutov, On the sum of digits of the Zeckendorf representations of two consecutive numbers, Fib. Q., 58:3 (2020), 203-207.
LINKS
MATHEMATICA
s = SequencePosition[Mod[DigitCount[Select[Range[0, 400], BitAnd[#, 2 #] == 0 &], 2, 1], 2], {1, 1}][[;; , 1]] - 1; t = Table[0, {s[[-1]] + 1}]; t[[s + 1]] = 1; Accumulate[t] (* Amiram Eldar, Feb 05 2023 *)
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Sep 12 2020
EXTENSIONS
Offset corrected by Amiram Eldar, Feb 05 2023
STATUS
approved