Expansion of g.f.: 1/((1 - x^2 - x^3 - x^4 - x^5 - x^6 - x^7)*(1 + x + x^2 + x^3 + x^4 + x^5 - x^7)).
A147605
Expansion of g.f.: 1/((1 - x^2 - x^3 - x^4 - x^5 - x^6 - x^7)*(1 + x + x^2 + x^3 + x^4 + x^5 - x^7)).
Terms
- a(0) =1a(1) =-1a(2) =1a(3) =0a(4) =1a(5) =1a(6) =3a(7) =3a(8) =3a(9) =10a(10) =11a(11) =21a(12) =32a(13) =52a(14) =77a(15) =128a(16) =206a(17) =320a(18) =517a(19) =817a(20) =1297a(21) =2060a(22) =3290a(23) =5220a(24) =8298a(25) =13205a(26) =20980a(27) =33360a(28) =53056a(29) =84366
External references
- oeis: A147605