0,13

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

Index entries for Molien series

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);

Sequence in context: A071512 A080018 A079686 this_sequence A049262 A145201 A119464

Adjacent sequences: A005810 A005811 A005812 this_sequence A005814 A005815 A005816

nonn,easy,nice

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