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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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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; refs; listen; history; internal format)
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OFFSET
| 2,5
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REFERENCES
| 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
| T. D. Noe, Table of n, a(n) for n=2..10000
Eric Weisstein's World of Mathematics, Pascal's Triangle
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EXAMPLE
| 6 appears in both row 4 and row 6 in Pascal's triangle, therefore a(6)=2.
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CROSSREFS
| Cf. A003016, A003015.
Sequence in context: A193509 A003649 A003650 * A143898 A101873 A177991
Adjacent sequences: A059230 A059231 A059232 * A059234 A059235 A059236
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KEYWORD
| easy,nice,nonn
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AUTHOR
| Fabian Rothelius (fabian.rothelius(AT)telia.com), Jan 20 2001
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