Number of strings of numbers x(i=1..n) in 0..5 with sum i*x(i)^3 equal to n*125.

A184716

Number of strings of numbers x(i=1..n) in 0..5 with sum i*x(i)^3 equal to n*125.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =39a(6) =209a(7) =947a(8) =4403a(9) =20825a(10) =95461a(11) =420312a(12) =1824610a(13) =7767715a(14) =32447127a(15) =133426790a(16) =540454735a(17) =2157136063a(18) =8491433827a(19) =32994222337a(20) =126618582468a(21) =480170037501

External references