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Search: id:A079520
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| A079520 |
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Triangular array related to tennis ball problem, read by rows. |
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+0
2
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| 0, 0, 1, 0, 1, 3, 0, 1, 4, 10, 0, 1, 5, 15, 31, 0, 1, 6, 21, 52, 105, 0, 1, 7, 28, 80, 185, 343
(list; table; graph; listen)
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OFFSET
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0,6
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COMMENT
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Rows have been reversed.
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REFERENCES
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D. Merlini, R. Sprugnoli and M. C. Verri, The tennis ball problem, J. Combin. Theory, A 99 (2002), 307-344 (Fig. A.3).
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EXAMPLE
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0; 0,1; 0,1,3; 0,1,4,10; ...
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CROSSREFS
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Leading diagonal gives A079522.
Sequence in context: A124323 A106683 A139601 this_sequence A119879 A115714 A020768
Adjacent sequences: A079517 A079518 A079519 this_sequence A079521 A079522 A079523
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KEYWORD
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nonn,tabl
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Jan 22 2003
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