G.f. satisfies: A(x) = Product_{n>=0} 1/( (1 - (x*A(x))^(5*n+1)) * (1 - (x*A(x))^(5*n+4)) ).
A203067
G.f. satisfies: A(x) = Product_{n>=0} 1/( (1 - (x*A(x))^(5*n+1)) * (1 - (x*A(x))^(5*n+4)) ).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =48a(6) =161a(7) =557a(8) =1975a(9) =7140a(10) =26223a(11) =97567a(12) =366979a(13) =1393104a(14) =5330500a(15) =20537289a(16) =79605148a(17) =310211668a(18) =1214618931a(19) =4776089725a(20) =18852665026a(21) =74676503735a(22) =296736116911
External references
- oeis: A203067