Column 3 of triangle A113993, also equals column 0 of A113983^4.
A113995
Column 3 of triangle A113993, also equals column 0 of A113983^4.
Terms
- a(0) =1a(1) =4a(2) =16a(3) =64a(4) =276a(5) =1304a(6) =6808a(7) =39320a(8) =250752a(9) =1759604a(10) =13530928a(11) =113522192a(12) =1034613180a(13) =10199679712a(14) =108334569184
External references
- oeis: A113995