A353144 Decimal repunits written in base 5.

0, 1, 21, 421, 13421, 323421, 12023421, 241023421, 10321023421, 211421023421, 4233421023421, 140223421023421, 3310023421023421, 121201023421023421, 2424021023421023421, 104030421023421023421, 2131113421023421023421, 43122323421023421023421, 1413002023421023421023421

Offset: 0

Author

Seiichi Manyama, Apr 26 2022

Keywords

• nonn
• base
• easy

Crossrefs

Cf. A002275, A291962, A353142, A353143, A353145, A353146, A353147, A353148.

Cf. A003463, A007091.

Programs

PARI

a(n) = fromdigits(digits((10^n-1)/9, 5));

Formula

a(n) = A007091(A002275(n)).