login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A256402 Denominators of coefficients of expansion of exp(-Sum_{k=0..oo} x^(2^k)/2^k ) in powers of x. 3
1, 1, 1, 3, 3, 5, 45, 63, 105, 405, 14175, 17325, 18711, 552825, 14189175, 49116375, 91216125, 144729585, 97692469875, 109185701625, 1031198293125, 10257709336875, 3430178002251, 2348038513445625, 1034450533895625, 160789593855515625, 16025362854266390625 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
Koda, Tatsuhiko; Sato, Masaki; Takegahara, Yugen; 2-adic properties for the numbers of involutions in the alternating groups, J. Algebra Appl. 14 (2015), no. 4, 1550052 (21 pages). See Lemma 2.1.
CROSSREFS
For numerators see A256401. Cf. A256400.
Sequence in context: A110426 A200562 A093310 * A170919 A364661 A280779
KEYWORD
nonn,frac
AUTHOR
N. J. A. Sloane, Mar 29 2015
EXTENSIONS
a(18)-a(26) from Hiroaki Yamanouchi, Mar 30 2015
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)