A063431 Square array read by antidiagonals of n written in base k (n,k>0).

1, 1, 11, 1, 10, 111, 1, 2, 11, 1111, 1, 2, 10, 100, 11111, 1, 2, 3, 11, 101, 111111, 1, 2, 3, 10, 12, 110, 1111111, 1, 2, 3, 4, 11, 20, 111, 11111111, 1, 2, 3, 4, 10, 12, 21, 1000, 111111111, 1, 2, 3, 4, 5, 11, 13, 22, 1001, 1111111111, 1, 2, 3, 4, 5, 10, 12, 20, 100

Offset

1,3

Comments

It is difficult to write ten in base 11 using decimal digits.

Links

Table of n, a(n) for n=1..64.

Example

Rows start (1, 1, 1, 1, 1,...), (11, 10, 2, 2, 2,...), (111, 11, 10, 3, 3,...), (1111, 100, 11, 10, 4,...), etc.

Crossrefs

Cf. A063432. Rows start effectively as the reverse of A001731, A001732, A001733, A001734, A001735, A001736, A008707, A008708, A008709, A008710, A008711, A008712, A008713, A008714, A008715, A008716, A008717 etc. Columns are A000042, A007088, A007089, A007090, A007091, A007092, A007093, A007094, A007095, A000027 and perhaps A055649 etc.

Sequence in context: A231922 A231920 A230891 * A266327 A274216 A280524

Adjacent sequences: A063428 A063429 A063430 * A063432 A063433 A063434

Keyword

base,nonn,tabl

Author

Henry Bottomley, Jul 20 2001

Status

approved