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A051053
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a(n) = binomial(n, floor(n/6)).
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7
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1, 1, 1, 1, 1, 1, 6, 7, 8, 9, 10, 11, 66, 78, 91, 105, 120, 136, 816, 969, 1140, 1330, 1540, 1771, 10626, 12650, 14950, 17550, 20475, 23751, 142506, 169911, 201376, 237336, 278256, 324632, 1947792, 2324784, 2760681, 3262623, 3838380, 4496388
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OFFSET
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0,7
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LINKS
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FORMULA
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Let n = 6*k+j, 0 <= j <= 5.
a(n+6)*(k+1)*Product_{m=1..5} (5*k+j+m) = a(n)*Product_{m=1..6} (6*k+j+m).
a(n) ~ sqrt(3/(5*Pi*k))*(6/5)^j*(6^6/5^5)^k as k -> infinity. (End)
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MAPLE
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seq(binomial(n, floor(n/6)), n=0..60); # Robert Israel, Mar 11 2018
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MATHEMATICA
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Table[Binomial[n, Floor[n/6]], {n, 0, 50}] (* Harvey P. Dale, Dec 18 2013 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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