Number of strings of numbers x(i=1..n) in 0..7 with sum i*x(i)^3 equal to n*343.

A184718

Number of strings of numbers x(i=1..n) in 0..7 with sum i*x(i)^3 equal to n*343.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =2a(4) =15a(5) =76a(6) =560a(7) =3604a(8) =24327a(9) =152952a(10) =925232a(11) =5495907a(12) =31966719a(13) =182331659a(14) =1021217701a(15) =5622236708a(16) =30456148470a(17) =162478306805a(18) =854327762047

External references