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A064813
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a(n) = binomial(composite(n), n), where composite = A002808, composite numbers.
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1
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4, 15, 56, 126, 252, 924, 3432, 6435, 11440, 43758, 167960, 293930, 497420, 1961256, 3268760, 5311735, 8436285, 13123110, 54627300, 225792840, 354817320, 548354040, 834451800, 1251677700, 5414950296, 8122425444, 12033222880
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,200
Matthew M. Conroy, Home page (listed instead of email address)
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PROG
| (PARI)j=0; i=4; while(i<100, while(isprime(i), i=i+1); j=j+1; print(binomial(i, j)); i=i+1)
(PARI) nextComp(n)= { if (!isprime(n), return(n)); return(n + 1) } { c=3; for (n=1, 200, c=nextComp(c + 1); write("b064813.txt", n, " ", binomial(c, n)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 27 2009]
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CROSSREFS
| A002808, A060604.
Sequence in context: A050183 A094375 A047018 * A183932 A009940 A081163
Adjacent sequences: A064810 A064811 A064812 * A064814 A064815 A064816
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KEYWORD
| nonn
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AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 23 2001
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EXTENSIONS
| More terms from Matthew M. Conroy, Oct 30 2001
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