A343255 a(n) is obtained by replacing 2's by n's in the hereditary base-2 expansion of n.

0, 1, 2, 4, 256, 3126, 46662, 823551, 134217728, 3486784402, 100000000010, 3138428376733, 115909305827328, 4240251492291543, 166680102383370254, 7006302246093750016

Offset

0,3

Comments

The next term, a(16), has 22212093154093428530 digits, and is too large to include.

Links

Table of n, a(n) for n=0..15.

Wikipedia, Hereditary base-n notation

Formula

a(n) = A342707(n, n).

Example

For n = 5:
- 5 = 2^2^2^0 + 2^0,
- so a(5) = 5^5^5^0 + 5^0 = 3126.

Crossrefs

Cf. A054382, A342707.

Sequence in context: A173566 A271551 A058990 * A262413 A363039 A012437

Adjacent sequences: A343252 A343253 A343254 * A343256 A343257 A343258

Keyword

nonn

Author

Rémy Sigrist, Jun 04 2021

Status

approved