A056201 Characteristic cube divisor (A056191) of central binomial coefficient (A001405).

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

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.

Equals A056059^3.

Sequence in context: A008834 A368170 A366906 * A368329 A360540 A088842

Adjacent sequences: A056198 A056199 A056200 * A056202 A056203 A056204

Keyword

nonn

Author

Labos Elemer, Aug 02 2000

Status

approved