A028902 Map n = Sum c_i 10^i to a(n) = Sum c_i 7^i.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 49, 50, 51, 52

Offset

0,3

Links

Alan Michael Gómez Calderón, Table of n, a(n) for n = 0..10000

Prog

(PARI) a(n) = fromdigits(digits(n), 7); \\ Alan Michael Gómez Calderón, Sep 28 2025

Crossrefs

Sequence in context: A373229 A347105 A245351 * A081598 A390503 A232360

Adjacent sequences: A028899 A028900 A028901 * A028903 A028904 A028905

Keyword

nonn,base

Author

N. J. A. Sloane

Extensions

More terms from Erich Friedman.

Status

approved