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)^10.
A162617
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)^10.
Terms
- a(0) =1a(1) =10a(2) =55a(3) =219a(4) =705a(5) =1947a(6) =4784a(7) =10715a(8) =22253a(9) =43395a(10) =80223a(11) =141648a(12) =240305a(13) =393602a(14) =624920a(15) =964955a(16) =1453187a(17) =2139455a(18) =3085611a(19) =4367220a(20) =6075267a(21) =8317827a(22) =11221650a(23) =14933610a(24) =19621965a(25) =25477374a(26) =32713617a(27) =41567965a(28) =52301149a(29) =65196880
External references
- oeis: A162617