5-fold convolution of A000302 (powers of 4); expansion of 1/(1-4*x)^5.
A040075
5-fold convolution of A000302 (powers of 4); expansion of 1/(1-4*x)^5.
Terms
- a(0) =1a(1) =20a(2) =240a(3) =2240a(4) =17920a(5) =129024a(6) =860160a(7) =5406720a(8) =32440320a(9) =187432960a(10) =1049624576a(11) =5725224960a(12) =30534533120a(13) =159719096320a(14) =821412495360
External references
- oeis: A040075