A353143 Decimal repunits written in base 4.

0, 1, 23, 1233, 101113, 2231213, 123020013, 10033101013, 222120223013, 12213312233013, 1002032203113013, 22112101201213013, 1213132233100013013, 100022303120201013013, 2201230001311023013013, 121100320102103233013013, 3330220302313011113013013

Offset: 0

Author

Seiichi Manyama, Apr 26 2022

Keywords

• nonn
• base
• easy

Crossrefs

Cf. A002275, A291962, A353142, A353144, A353145, A353146, A353147, A353148.

Cf. A002450, A007090.

Programs

PARI

a(n) = fromdigits(digits((10^n-1)/9, 4));

Formula

a(n) = A007090(A002275(n)).