A043259 Numbers k such that 7 and 9 occur juxtaposed in the base-10 representation of k but not of k-1.

79, 97, 179, 197, 279, 297, 379, 397, 479, 497, 579, 597, 679, 697, 779, 790, 879, 897, 970, 997, 1079, 1097, 1179, 1197, 1279, 1297, 1379, 1397, 1479, 1497, 1579, 1597, 1679, 1697, 1779, 1790, 1879, 1897, 1970, 1997, 2079

Offset

1,1

Links

Table of n, a(n) for n=1..41.

Crossrefs

Sequence in context: A318158 A117244 A039436 * A044039 A065211 A106757

Adjacent sequences: A043256 A043257 A043258 * A043260 A043261 A043262

Keyword

nonn,base

Author

Clark Kimberling

Status

approved