A039988 k th digit of a(n) is the number of different digits within 1 of k (not including k).

11, 111, 1111, 1221, 11111, 111111, 1111111, 1221221, 11111111, 111111111, 1111111111, 1221221221, 11111111111, 111111111111, 1111111111111, 1221221221221, 11111111111111, 111111111111111, 1111111111111111

Offset

0,1

Links

Table of n, a(n) for n=0..18.

Crossrefs

Sequence in context: A273978 A334131 A077488 * A182452 A283006 A283257

Adjacent sequences: A039985 A039986 A039987 * A039989 A039990 A039991

Keyword

nonn,base

Author

Erich Friedman

Status

approved