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A001161 Numbers containing an even number of letters. 1
0, 4, 5, 9, 11, 12, 13, 14, 18, 19, 20, 24, 25, 29, 30, 34, 35, 39, 41, 42, 43, 46, 47, 48, 51, 52, 53, 56, 57, 58, 61, 62, 63, 66, 67, 68, 71, 72, 73, 76, 77, 78, 80, 84, 85, 89, 90, 94, 95, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Cf. A005589, complement of A001162.

Sequence in context: A034809 A096808 A067261 * A099539 A110603 A224862

Adjacent sequences:  A001158 A001159 A001160 * A001162 A001163 A001164

KEYWORD

nonn,word

AUTHOR

William P. Everts [ bille(AT)regenisys.com ]

STATUS

approved

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Last modified March 26 20:42 EDT 2019. Contains 321534 sequences. (Running on oeis4.)