A300558 -id:A300558 - cp's OEIS frontend

A300577 a(n) is the decimal expansion of A300558(n).

1, 21, 2037, 4794357, 196340164597, 61763612763039733, 151115717157847371950069, 346153123972842504418905182250997, 26760894238193478629425592359457151764735989, 32693238205135988878951555893647307218529027276340275189

Offset: 1

Seiichi Manyama, Mar 09 2018

			n |  A300558(n)             |  a(n)
--------------------------------------
1 | 1                       | 1
2 | 10101                   | 21
3 | 11111110101             | 2037
4 | 10010010010011111110101 | 4794357

Seiichi Manyama, Table of n, a(n) for n = 1..35

Cf. A300558.

A300557 a(n) is the concatenation 1 written in base 2 once, 2 written in base 2 twice, ..., n written in base 2 n times.

Original entry on oeis.org

1, 11010, 11010111111, 11010111111100100100100, 11010111111100100100100101101101101101, 11010111111100100100100101101101101101110110110110110110, 11010111111100100100100101101101101101110110110110110110111111111111111111111

Offset: 1

Seiichi Manyama, Mar 08 2018

nonn

Seiichi Manyama, Table of n, a(n) for n = 1..21

Cf. A007088, A098129, A300558.

cp's OEIS Frontend

A300577 a(n) is the decimal expansion of A300558(n).

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