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A020904 Positions of 2 in A020903; complement of A191777. 2
2, 4, 7, 9, 11, 13, 16, 18, 22, 24, 27, 29, 31, 34, 37, 39, 42, 44, 46, 48, 51, 53, 56, 58, 61, 63, 65, 67, 69, 72, 74, 76, 79, 81, 84, 86, 88, 90, 92, 94, 97, 99, 101, 103, 106, 108, 111, 113, 115, 117, 121, 123, 126, 128, 130, 132, 135, 137, 139, 142 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..60.

C. Kimberling, Fractal sequences

C. Kimberling, Numeration systems and fractal sequences, Acta Arithmetica 73 (1995) 103-117.

EXAMPLE

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).

MATHEMATICA

(See A020903.)

CROSSREFS

Cf. A020903, A191777.

Sequence in context: A022848 A287723 A284589 * A043000 A160822 A111495

Adjacent sequences:  A020901 A020902 A020903 * A020905 A020906 A020907

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 27 13:45 EDT 2021. Contains 348276 sequences. (Running on oeis4.)