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A115021 Numbers typed on a keyboard's numeric keypad: start at 1 and read alternately up and down until reaching 9. 0
1, 4, 7, 8, 5, 2, 3, 6, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..8.

EXAMPLE

Other versions:

1 2 3 6 5 4 7 8 9

3 6 9 8 5 2 1 4 7

3 2 1 4 5 6 9 8 7

7 8 9 6 5 4 1 2 3

7 4 1 2 5 8 9 6 3

9 6 3 2 5 8 7 4 1

9 8 7 4 5 6 3 2 1

CROSSREFS

Sequence in context: A176778 A021213 A154687 * A200367 A272490 A261654

Adjacent sequences:  A115018 A115019 A115020 * A115022 A115023 A115024

KEYWORD

nonn,fini,full

AUTHOR

Gilson Soares (gilson.soares(AT)gmail.com), Feb 23 2006

STATUS

approved

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Last modified January 23 03:15 EST 2022. Contains 350504 sequences. (Running on oeis4.)