7-fold convolution of A000302 (powers of 4).
A054337
7-fold convolution of A000302 (powers of 4).
Terms
- a(0) =1a(1) =28a(2) =448a(3) =5376a(4) =53760a(5) =473088a(6) =3784704a(7) =28114944a(8) =196804608a(9) =1312030720a(10) =8396996608a(11) =51908706304a(12) =311452237824
External references
- oeis: A054337