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Search: id:A115021
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| A115021 |
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Numbers typed on a keyboard's numeric keypad: start at 1 and read alternately up and down until reaching 9. |
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+0
1
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OFFSET
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0,2
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EXAMPLE
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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
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CROSSREFS
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Sequence in context: A060409 A115632 A021213 this_sequence A121488 A115291 A108615
Adjacent sequences: A115018 A115019 A115020 this_sequence A115022 A115023 A115024
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KEYWORD
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nonn,fini,full
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AUTHOR
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Gilson Soares (gilson.soares(AT)gmail.com), Feb 23 2006
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