A353146 Decimal repunits written in base 7.

0, 1, 14, 216, 3145, 44252, 641640, 12305251, 163304624, 2516300046, 36351200665, 542225612642, 11012302601310, 143163240420331, 2224515456064634, 32255340625240206, 453016062064453015, 6552245200234552232, 125142553603416142350

Offset

0,3

Links

Table of n, a(n) for n=0..18.

Formula

a(n) = A007093(A002275(n)).

Prog

(PARI) a(n) = fromdigits(digits((10^n-1)/9, 7));

Crossrefs

Cf. A002275, A291962, A353142, A353143, A353144, A353145, A353147, A353148.

Cf. A007093, A023000.

Sequence in context: A275354 A121972 A240781 * A113894 A225315 A292041

Adjacent sequences: A353143 A353144 A353145 * A353147 A353148 A353149

Keyword

nonn,base,easy

Author

Seiichi Manyama, Apr 26 2022

Status

approved