One-fourth of fourth column of triangle A067304.
A067307
One-fourth of fourth column of triangle A067304.
Terms
- a(0) =7a(1) =71a(2) =768a(3) =8920a(4) =109232a(5) =1390800a(6) =18237952a(7) =244701440a(8) =3343713024a(9) =46374830848a(10) =651170275328
External references
- oeis: A067307