|
Search: id:A060046
|
|
|
| A060046 |
|
Generalized sum of divisors function: third diagonal of A060047. |
|
+0
2
|
|
| 1, 2, 4, 8, 14, 24, 40, 56, 84, 122, 168, 232, 312, 408, 528, 672, 865, 1078, 1336, 1648, 2002, 2424, 2912, 3472, 4116, 4872, 5744, 6648, 7752, 8976, 10304, 11872, 13566, 15424, 17556, 19896, 22414, 25256, 28336, 31584, 35462, 39482, 43728, 48664
(list; graph; listen)
|
|
|
OFFSET
|
9,2
|
|
|
REFERENCES
|
P. A. MacMahon, Divisors of numbers and their continuations in the theory of partitions, Proc. London Math. Soc., (2) 19 (1919), 75-113; Coll. Papers II, pp. 303-341.
|
|
FORMULA
|
G.f.: (t(1)^3-3*t(1)*t(2)+2*t(3))/6 where t(i) = Sum((x^(2*n-1)/(1-x^(2*n-1))^2)^i,n=1..inf), i=1..3. - Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 21 2007
|
|
CROSSREFS
|
Sequence in context: A100250 A053800 A091774 this_sequence A053801 A091778 A053802
Adjacent sequences: A060043 A060044 A060045 this_sequence A060047 A060048 A060049
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com), Mar 19 2001
|
|
EXTENSIONS
|
More terms from Naohiro Nomoto (n_nomoto(AT)yabumi.com), Jan 24 2002
More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 21 2007
|
|
|
Search completed in 0.002 seconds
|
