Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 3rd powers equal to sum(i^3,i=0..n-1).
A216631
Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 3rd powers equal to sum(i^3,i=0..n-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =8a(8) =18a(9) =42a(10) =100a(11) =265a(12) =775a(13) =2241a(14) =6709a(15) =20661a(16) =64264a(17) =202154a(18) =647838a(19) =2095932a(20) =6861091a(21) =22703554a(22) =75731878a(23) =254656486a(24) =862839461a(25) =2942117884a(26) =10094669306a(27) =34837009237a(28) =120849420979a(29) =421291017964
External references
- oeis: A216631