A039989 k th digit of a(n) is the number of different digits within 3 of k (not including k).

11, 111, 122, 212, 221, 1111, 1222, 2122, 2212, 2221, 11111, 12221, 21222, 22122, 22212, 111111, 122212, 122221, 133322, 212221, 221222, 222122, 223331, 1111111, 1222122, 1222212, 1222221, 1333222, 2122212, 2122221, 2212221, 2221222

Offset

0,1

Links

Table of n, a(n) for n=0..31.

Crossrefs

Sequence in context: A308365 A083278 A039987 * A039990 A269002 A092819

Adjacent sequences: A039986 A039987 A039988 * A039990 A039991 A039992

Keyword

base,easy,nonn

Author

Erich Friedman

Status

approved