Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 4th powers equal to sum(i^4,i=0..n-1).
A216632
Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 4th powers equal to sum(i^4,i=0..n-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =3a(8) =6a(9) =12a(10) =24a(11) =63a(12) =164a(13) =424a(14) =1163a(15) =2919a(16) =8289a(17) =24060a(18) =70704a(19) =212130a(20) =672520a(21) =2080293a(22) =6485878a(23) =20449084
External references
- oeis: A216632