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Search: id:A121578
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| A121578 |
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Values m of number pairs (m,n) which yield associated matching times on the clock with interchanged hour and minute hands for corresponding n in A121577. |
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+0
2
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| 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 1, 13, 25, 37, 49, 61, 73, 85, 97, 109, 121, 133, 2, 14, 26, 38, 50, 62, 74, 86, 98, 110, 122, 134, 3, 15, 27, 39, 51, 63, 75, 87, 99, 111, 123, 135, 4, 16, 28, 40, 52, 64, 76, 88, 100, 112, 124, 136, 5, 17, 29, 41, 53, 65
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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The pair (m,n) is reflexive,i.e., when n=m,m=n.
In fact, for n = 12*i + j, with 0=<i<12 ; 0=<j<12, m = i + 12*j. - Lekraj Beedassy (blekraj(AT)yahoo.com), Aug 09 2006
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REFERENCES
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A. P. Domoryad, Mathematical Games and Pastimes, Problem 15 pp. 242;289 Pergamon Press NY 1965.
Y. Perelman, Mathematics can be fun, pp. 236-8 Mir Moscow.
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CROSSREFS
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Sequence in context: A066085 A094529 A044852 this_sequence A044897 A008594 A033024
Adjacent sequences: A121575 A121576 A121577 this_sequence A121579 A121580 A121581
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KEYWORD
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fini,nonn
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), Aug 08 2006
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