A043226 Numbers k such that 1 and 3 occur juxtaposed in the base-10 representation of k but not of k-1.

13, 31, 113, 130, 213, 231, 310, 331, 413, 431, 513, 531, 613, 631, 713, 731, 813, 831, 913, 931, 1013, 1031, 1113, 1130, 1213, 1231, 1300, 1413, 1431, 1513, 1531, 1613, 1631, 1713, 1731, 1813, 1831, 1913, 1931, 2013, 2031

Offset

1,1

Links

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

Crossrefs

Sequence in context: A039403 A062339 A368051 * A044006 A179034 A179035

Adjacent sequences: A043223 A043224 A043225 * A043227 A043228 A043229

Keyword

nonn,base

Author

Clark Kimberling

Status

approved