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A056201 Characteristic cube divisor (A056191) of central binomial coefficient (A001405). 1
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 8, 1, 1, 1, 8, 27, 216, 8, 1, 1, 1, 27, 27, 1, 1, 1, 8, 1, 1, 1, 8, 1, 8, 216, 27, 1, 1, 1, 8, 27, 216, 8, 1, 1, 8, 8, 1, 8, 1, 1, 8, 1, 1, 1, 1, 1, 1, 1, 8, 1, 1, 1, 8, 1, 8, 8, 1, 1, 1, 1, 8, 27, 216, 216, 27, 1, 8, 8, 1, 8, 1, 27, 216 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,14

LINKS

Table of n, a(n) for n=1..94.

FORMULA

a(n) = A056059(n)^3 = g^3 and binomial(n, floor(n/2)) = a(n)^3 * L^2 * A056060(n), where L = A056056(n)/A056059(n).

EXAMPLE

n=14, binomial(14,8) = 3432 = 2*2*2*3*11*13 so g(3432)=2, thus a(14)=8.

CROSSREFS

Cf. A056056-A056060, A056202.

Sequence in context: A103760 A268355 A008834 * A088842 A284098 A010152

Adjacent sequences:  A056198 A056199 A056200 * A056202 A056203 A056204

KEYWORD

nonn

AUTHOR

Labos Elemer, Aug 02 2000

STATUS

approved

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Last modified April 17 19:51 EDT 2021. Contains 343070 sequences. (Running on oeis4.)