G.f. is the polynomial (1-x^3) * (1-x^6) * (1-x^9) * (1-x^12) * (1-x^15) * (1-x^18) * (1-x^21) * (1-x^24) * (1-x^27) * (1-x^30) * (1-x^33) / (1-x)^11.
A162628
G.f. is the polynomial (1-x^3) * (1-x^6) * (1-x^9) * (1-x^12) * (1-x^15) * (1-x^18) * (1-x^21) * (1-x^24) * (1-x^27) * (1-x^30) * (1-x^33) / (1-x)^11.
Terms
- a(0) =1a(1) =11a(2) =66a(3) =285a(4) =990a(5) =2937a(6) =7721a(7) =18436a(8) =40689a(9) =84084a(10) =164307a(11) =305955a(12) =546260a(13) =939862a(14) =1564782a(15) =2529737a(16) =3982924a(17) =6122379a(18) =9207990a(19) =13575210a(20) =19650477a(21) =27968304a(22) =39189954a(23) =54123564a(24) =73745529a(25) =99222903a(26) =131936520a(27) =173504485
External references
- oeis: A162628