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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A005813 Molien series for 6-dimensional complex representation of double cover of J2. 1
1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0, 1, 2, 3, 1, 4, 2, 5, 5, 7, 4, 10, 8, 12, 12, 16, 13, 24, 21, 27, 27, 35, 34, 48, 45, 54, 57, 72, 70, 90, 88, 104, 112, 132, 132, 159, 162, 188, 199, 228, 230, 270, 281, 316, 333, 373 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,13

REFERENCES

J. H. Conway and N. J. A. Sloane, circa 1977.

LINKS

Ray Chandler, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (0, 0, 1, 1, 0, 1, 0, 0, -1, -1, -1, 0, -1, 0, 1, 0, 1, -1, 0, 1, 0, 0, 0, 0, 1, 0, -1, 1, 0, 1, 0, -1, 0, -1, -1, -1, 0, 0, 1, 0, 1, 1, 0, 0, -1).

Index entries for Molien series

FORMULA

a(n) ~ 1/2268000*n^5 + 1/151200*n^4 + 17/453600*n^3 (sequence without interleaved zeros). - Ralf Stephan, Apr 29 2014

MAPLE

p/q = 1+x^12+x^20+2*x^24+x^28+..., where

p := x^140+x^110+x^108+x^106+2*x^104+2*x^102+3*x^100+3*x^98+3*x^96+3*x^94+4*x^92+

4*x^90+4*x^88+4*x^86+4*x^84+4*x^82+4*x^80+4*x^78+3*x^76+4*x^74+3*x^72+4*x^70+

3*x^68+4*x^66+3*x^64+4*x^62+4*x^60+4*x^58+4*x^56+4*x^54+4*x^52+4*x^50+4*x^48+

3*x^46+3*x^44+3*x^42+3*x^40+2*x^38+2*x^36+x^34+x^32+x^30+1;

q := (1-x^12)*(1-x^20)*(1-x^24)*(1-x^28)*(1-x^30)*(1-x^32);

CROSSREFS

Sequence in context: A263136 A080018 A079686 * A049262 A145201 A284265

Adjacent sequences:  A005810 A005811 A005812 * A005814 A005815 A005816

KEYWORD

nonn,easy,nice

AUTHOR

N. J. A. Sloane

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy .

Last modified June 23 13:28 EDT 2017. Contains 288665 sequences.