|
Search: id:A056060
|
|
|
| A056060 |
|
Divisor of square-free part of the central binomial coefficients which is prime to its largest square. |
|
+0
5
|
|
| 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; listen)
|
|
|
OFFSET
|
1,2
|
|
|
FORMULA
|
a(n)=A055231[A001405(n)]
|
|
EXAMPLE
|
n=14, binomial[14,7]=3432=8.3.11.13. The largest square divisor is 4,square-free 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: A071714 A077753 A058911 this_sequence A056058 A028255 A048633
Adjacent sequences: A056057 A056058 A056059 this_sequence A056061 A056062 A056063
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Jul 26 2000
|
|
|
Search completed in 0.002 seconds
|
