A309540 a(n) is the smallest positive number not yet in the sequence that contains exactly one even digit and exactly one odd digit from a(n-1), and no digit in a(n) is repeated.

10, 102, 12, 21, 120, 103, 30, 130, 104, 14, 41, 124, 123, 23, 32, 132, 125, 25, 52, 152, 126, 16, 61, 106, 105, 50, 150, 107, 70, 170, 108, 18, 81, 128, 127, 27, 72, 172, 129, 29, 92, 192, 142, 134, 34, 43, 143, 140, 109, 90, 190, 160, 136, 36, 63, 163

Offset

1,1

Comments

The terms sorted in increasing order give A309539.

Links

Table of n, a(n) for n=1..56.

Example

a(2)=102: a(2) is not 100 (since zero would be repeated), nor 101 (since 1 would be repeated).

Crossrefs

Cf. A184992, A318700, A309390, A309539, A076654.

Sequence in context: A061107 A015498 A266283 * A039393 A199168 A297062

Adjacent sequences: A309537 A309538 A309539 * A309541 A309542 A309543

Keyword

nonn,base,fini

Author

Enrique Navarrete, Aug 06 2019

Status

approved