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A056060 Divisor of squarefree part of the central binomial coefficients which is prime to its largest square. 6
1, 2, 3, 6, 10, 5, 35, 70, 14, 7, 462, 231, 429, 429, 715, 1430, 24310, 12155, 92378, 46189, 88179, 88179, 1352078, 676039, 52003, 52003, 7429, 7429, 1077205, 1077205, 33393355, 66786710, 43214930, 21607465, 181502706, 90751353 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..36.

FORMULA

a(n)=A055231[A001405(n)]

EXAMPLE

n=14, binomial[14,7]=3432=8.3.11.13. The largest square divisor is 4,squarefree part is 858. So GCD[4,858]=2 and a(14)=858/2=429.

CROSSREFS

Cf. A001405, A000188, A008833, A007913, A055229, A055231, A046098, A034974, A056056-A056061.

Sequence in context: A276946 A191542 A191668 * A056058 A028255 A048633

Adjacent sequences:  A056057 A056058 A056059 * A056061 A056062 A056063

KEYWORD

nonn

AUTHOR

Labos Elemer, Jul 26 2000

STATUS

approved

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Last modified February 20 17:02 EST 2020. Contains 332080 sequences. (Running on oeis4.)