|
Search: id:A145640
|
|
|
| A145640 |
|
Denominator the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=16. |
|
+0
39
|
|
| 1, 3, 5, 35, 315, 3465, 45045, 45045, 255255, 969969, 29393, 2028117, 50702925, 456326325, 13233463425, 820474732350, 4512611027925, 4512611027925, 166966608033225, 12843585233325, 526586994566325, 22643240766351975
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
For numerators see A145639. For general properties of A_l(x) see A145609.
|
|
MATHEMATICA
|
m = 16; aa = {}; Do[k = 0; Do[k = k + m^(2 r + 1 - d)/d, {d, 1, 2 r}]; AppendTo[aa, Denominator[k]], {r, 1, 30}]; aa (*Artur Jasinski*)
|
|
CROSSREFS
|
Cf. A145609 - A145640.
Adjacent sequences: A145637 A145638 A145639 this_sequence A145641 A145642 A145643
Sequence in context: A057908 A120828 A077784 this_sequence A086158 A158878 A077779
|
|
KEYWORD
|
frac,nonn
|
|
AUTHOR
|
Artur Jasinski (grafix(AT)csl.pl), Oct 14 2008
|
|
EXTENSIONS
|
Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 21 2009
|
|
|
Search completed in 0.002 seconds
|
