Column 4 of table A125790; also equals row sums of matrix power A078121^4.
A125794
Column 4 of table A125790; also equals row sums of matrix power A078121^4.
Terms
- a(0) =1a(1) =5a(2) =25a(3) =165a(4) =1625a(5) =25509a(6) =664665a(7) =29559717a(8) =2290267225a(9) =314039061413
External references
- oeis: A125794