A044836 Positive integers having more base-10 runs of even length than odd.

11, 22, 33, 44, 55, 66, 77, 88, 99, 1100, 1111, 1122, 1133, 1144, 1155, 1166, 1177, 1188, 1199, 2200, 2211, 2222, 2233, 2244, 2255, 2266, 2277, 2288, 2299, 3300, 3311, 3322, 3333, 3344, 3355, 3366, 3377, 3388, 3399, 4400

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

• Rémy Sigrist, Table of n, a(n) for n = 1..10000

Crossrefs

Number of even/odd runs: A044941, A044950. Cf. A044851 (no fewer), A044866 (same number).

Cf. A044828 (binary analog), A338754.

Programs

PARI

is(n,base=10) = { my (v=0); while (n, my (d=n%base, w=0); while (n%base==d, n\=base; w++); v+=(-1)^w); v>0 } \\ Rémy Sigrist, Nov 07 2020

Extensions

Incorrect formula removed by Rémy Sigrist, Nov 07 2020