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Search: id:A116547
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| A116547 |
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Permutation of natural numbers generated by 5-rowed array shown below. |
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+0
1
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| 0, 5, 1, 10, 6, 2, 15, 11, 7, 3, 20, 16, 12, 8, 4, 25, 21, 17, 13, 9, 30, 26, 22, 18, 14, 35, 31, 27, 23, 19, 40, 36, 32, 28, 24, 45, 41, 37, 33, 29, 50, 46, 42, 38, 34, 55, 51, 47, 43, 39, 60, 56, 52, 48, 44, 65, 61, 57, 53, 49, 70, 66, 62, 58, 54, 75, 71, 67, 63, 59, 80, 76, 72
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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0 5 10 15 20 25 30 35 40 45 ... a(n)=5n
1 6 11 16 21 26 31 36 41 46 ... a(n)=5n+1
2 7 12 17 22 27 32 37 42 47 ... a(n)=5n+2
3 8 13 18 23 28 33 38 43 48 ... a(n)=5n+3
4 9 14 19 24 29 34 39 44 49 ... a(n)=5n+4
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REFERENCES
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M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997
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FORMULA
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Starting with term a(10): a(n+5k) = a(n) + 5k, with k>=1.
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CROSSREFS
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Cf. A115302, A116080.
Sequence in context: A050308 A063475 A135855 this_sequence A013612 A112830 A062967
Adjacent sequences: A116544 A116545 A116546 this_sequence A116548 A116549 A116550
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KEYWORD
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nonn
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Mar 16 2006
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