A316867 Number of times 6 appears in decimal expansion of n.

0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,67

Links

Table of n, a(n) for n=0..104.

Example

a(0) = 0 since the decimal representation of 0 does not contain the digit 6.
a(6) = 1 since 6 appears once in the decimal expansion of 6.

Mathematica

Array[ DigitCount[#, 10, 6] &, 105, 0]

Prog

(PARI) a(n) = #select(x->x==6, digits(n)); \\ Michel Marcus, Jul 20 2018

Crossrefs

Cf. A043513, A043514, A043515, A043516.

Cf. A055641, A268643, A316863, A316864, A316865, A316866, A316868, A316869, A102683.

Sequence in context: A269166 A331238 A330985 * A127327 A321144 A309048

Adjacent sequences: A316864 A316865 A316866 * A316868 A316869 A316870

Keyword

base,easy,nonn

Author

Robert G. Wilson v, Jul 15 2018

Status

approved