Number of strings of numbers x(i=1..n) in 0..7 with sum i^2*x(i)^3 equal to n^2*343.
A184316
Number of strings of numbers x(i=1..n) in 0..7 with sum i^2*x(i)^3 equal to n^2*343.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =7a(6) =69a(7) =574a(8) =3336a(9) =23562a(10) =140933a(11) =948340a(12) =5733551a(13) =37091416a(14) =225775799a(15) =1419329282a(16) =8589008422
External references
- oeis: A184316