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Search: id:A059233
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| A059233 |
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Number of rows in which n appears in Pascal's triangle (A007318). |
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+0
5
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| 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
(list; graph; listen)
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OFFSET
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2,5
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REFERENCES
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L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 93, #47.
C. S. Ogilvy, Tomorrow's Math. 2nd ed., Oxford Univ. Press, 1972, p. 96.
D. Singmaster, How often does an integer occur as a binomial coefficient?, Amer. Math. Monthly, 78 (1971), 385-386.
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LINKS
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Eric Weisstein's World of Mathematics, Pascal's Triangle
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EXAMPLE
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6 appears in both row 4 and row 6 in Pascal's triangle, therefore a(6)=2.
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CROSSREFS
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Cf. A003016, A003015.
Sequence in context: A062557 A003649 A003650 this_sequence A101873 A079211 A081418
Adjacent sequences: A059230 A059231 A059232 this_sequence A059234 A059235 A059236
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KEYWORD
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easy,nice,nonn
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AUTHOR
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Fabian Rothelius (fabian.rothelius(AT)telia.com), Jan 20 2001
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