Column 4 of triangle A113993, also equals column 0 of A113983^5.
A113996
Column 4 of triangle A113993, also equals column 0 of A113983^5.
Terms
- a(0) =1a(1) =5a(2) =25a(3) =125a(4) =665a(5) =3825a(6) =23977a(7) =164105a(8) =1225225a(9) =9954981a(10) =87750065a(11) =836288501a(12) =8587255313a(13) =94679407585
External references
- oeis: A113996