A107602 - OEIS

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A107602

In the natural numbers, swap digits in pairs (even-odd).

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 12, 22, 32, 24, 52, 26, 72, 28, 92, 3, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 14, 42, 34, 44, 54, 46, 74, 48, 94, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 16, 62, 36, 64, 56, 66, 76, 68, 96, 70, 71, 72, 73

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Differs from A000027 in a(21)=12.

LINKS

Table of n, a(n) for n=1..73.

EXAMPLE

0 is even hence n = 21 => 12, n=101=>110, etc.

CROSSREFS

Cf. A000027.

Sequence in context: A167129 A348287 A328447 * A272215 A323366 A030066

Adjacent sequences: A107599 A107600 A107601 * A107603 A107604 A107605

KEYWORD

nonn,base

AUTHOR

Zak Seidov, May 17 2005

STATUS

approved