A353148 Decimal repunits written in base 9.

0, 1, 12, 133, 1464, 16215, 178366, 2073137, 22814518, 252060710, 2772667811, 31610457022, 347715137243, 3835866520674, 43305642727525, 476363171113776, 5351104882252647, 58862154814780228, 658583714063682520, 7355531854711617721, 82021851512827806032

Offset: 0

Author

Seiichi Manyama, Apr 26 2022

Keywords

• nonn
• base
• easy

Crossrefs

Cf. A002275, A291962, A353142, A353143, A353144, A353145, A353146, A353147.

Cf. A002452, A007095, A055479.

Programs

PARI

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

Formula

a(n) = A007095(A002275(n)).

a(n) = (A055479(n) - 1)/10. - Hugo Pfoertner, Apr 26 2022