login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A030533 Expansion of Molien series for 4-D extraspecial group 2^{1+2*2}. 4
1, 1, 5, 6, 15, 19, 35, 44, 69, 85, 121, 146, 195, 231, 295, 344, 425, 489, 589, 670, 791, 891, 1035, 1156, 1325, 1469, 1665, 1834, 2059, 2255, 2511, 2736, 3025, 3281, 3605, 3894, 4255, 4579, 4979, 5340, 5781, 6181, 6665, 7106, 7635 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

LINKS

Index entries for Molien series

FORMULA

(x^8-x^6+2*x^4-x^2+1)/(1+x^2)^2/(-1+x^2)^2/(1+x)^2/(-1+x)^2.

EXAMPLE

1+x^2+5*x^4+6*x^6+15*x^8+19*x^10+35*x^12+44*x^14+69*x^16+...

CROSSREFS

Cf. A014095, A030535, A030536, A030537.

Sequence in context: A160109 A191213 A121847 * A115908 A185876 A091020

Adjacent sequences:  A030530 A030531 A030532 * A030534 A030535 A030536

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 14:50 EST 2012. Contains 206050 sequences.