A228709 Numbers having in decimal representation at least one pair of consecutive digits with the same parity.

11, 13, 15, 17, 19, 20, 22, 24, 26, 28, 31, 33, 35, 37, 39, 40, 42, 44, 46, 48, 51, 53, 55, 57, 59, 60, 62, 64, 66, 68, 71, 73, 75, 77, 79, 80, 82, 84, 86, 88, 91, 93, 95, 97, 99, 100, 102, 104, 106, 108, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120

Offset

1,1

Comments

A228710(a(n)) = 0.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Prog

(Haskell)
a228709 n = a228709_list !! (n-1)
a228709_list = filter ((== 0) . a228710) [0..]

Crossrefs

Cf. A030141 (complement), A228722, A228723; subsequences: A059708, A010785 apart from first 10 terms).

Sequence in context: A026818 A163140 A048596 * A358270 A358076 A292513

Adjacent sequences: A228706 A228707 A228708 * A228710 A228711 A228712

Keyword

nonn,base

Author

Reinhard Zumkeller, Aug 31 2013

Status

approved