|
Search: id:A006173
|
|
|
| A006173 |
|
Witt vector *2!.
(Formerly M0174)
|
|
+0
3
|
|
| 2, 1, 4, 13, 44, 135, 472, 1492, 5324, 17405, 63944, 215096, 799416, 2752909, 10310384, 36443256, 137263244, 489166324, 1860249448, 6739795717, 25596173800, 93596253769, 357974884304, 1319325363658, 5056389932088
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
If c is the Witt transform of b then b(n) = Sum ( A074650(n/d, c(d)) ), d|n.
The Somos transform sends sequence {a(n)} to sequence with g.f. Product (1/(1-a[i]*x^i)) i=1 to n.
|
|
REFERENCES
|
H. Gaudier, Relevement des coefficients binomiaux dans les vecteurs de Witt, S\'{e}minaire Lotharingien de Combinatoire. Institut de Recherche Math. Avanc\'{e}e, Universit\'{e} Louis Pasteur, Strasbourg, Actes 16 (1988), 358/S-18, pp. 93-108.
|
|
FORMULA
|
Inverse Somos transform of A000108 shifted left. (Wouter Meeussen, Aug 20 2002)
|
|
CROSSREFS
|
Cf. A006177, A006973.
Sequence in context: A052661 A088624 A066409 this_sequence A102055 A032174 A087801
Adjacent sequences: A006170 A006171 A006172 this_sequence A006174 A006175 A006176
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Simon Plouffe (simon.plouffe(AT)gmail.com)
|
|
EXTENSIONS
|
Edited by Christian G. Bower (bowerc(AT)usa.net), Aug 20 2002
|
|
|
Search completed in 0.002 seconds
|
