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Search: id:A090243
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| A090243 |
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Permutation of natural numbers generated by 4-rowed array shown below. |
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+0
5
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| 1, 7, 2, 11, 6, 3, 13, 10, 5, 4, 19, 14, 9, 8, 23, 18, 15, 12, 25, 22, 17, 16, 31, 26, 21, 20, 35, 30, 27, 24, 37, 34, 29, 28, 43, 38, 33, 32, 47, 42, 39, 36, 49, 46, 41, 40, 55, 50, 45, 44, 59, 54, 51, 48, 61, 58, 53, 52, 67, 62, 57, 56, 71, 66, 63, 60, 73, 70, 65, 64, 79, 74
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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1 7 11 13 19 23 25 31 35 37 43 47 ...
2 6 10 14 18 22 26 30 34 38 42 46 ...
3 5 9 15 17 21 27 29 33 39 41 45 ...
4 8 12 16 20 24 28 32 36 40 44 48 ...
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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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CROSSREFS
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Cf. A088520.
Adjacent sequences: A090240 A090241 A090242 this_sequence A090244 A090245 A090246
Sequence in context: A021936 A003673 A021141 this_sequence A104586 A040048 A070429
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KEYWORD
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easy,nonn
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jan 24 2004
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EXTENSIONS
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Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jan 30 2004
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