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 A020904 Positions of 2 in A020903; complement of A191777. 2

%I

%S 2,4,7,9,11,13,16,18,22,24,27,29,31,34,37,39,42,44,46,48,51,53,56,58,

%T 61,63,65,67,69,72,74,76,79,81,84,86,88,90,92,94,97,99,101,103,106,

%U 108,111,113,115,117,121,123,126,128,130,132,135,137,139,142

%N Positions of 2 in A020903; complement of A191777.

%H C. Kimberling, <a href="http://faculty.evansville.edu/ck6/integer/fractals.html">Fractal sequences</a>

%H C. Kimberling, <a href="http://matwbn.icm.edu.pl/ksiazki/aa/aa73/aa7321.pdf">Numeration systems and fractal sequences</a>, Acta Arithmetica 73 (1995) 103-117.

%e A020903 starts 1,2,1,2,1,1,2,1,2,... in which 2 occupies positions 2, 4, 7, 9, 11,... (Positions refer to offset 1 in A020903).

%t (See A020903.)

%Y Cf. A020903, A191777.

%K nonn

%O 1,1

%A _Clark Kimberling_

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Last modified December 1 11:30 EST 2021. Contains 349429 sequences. (Running on oeis4.)