Expansion of 1/(1-3*x)^9; 9-fold convolution of A000244 (powers of 3).
A036222
Expansion of 1/(1-3*x)^9; 9-fold convolution of A000244 (powers of 3).
Terms
- a(0) =1a(1) =27a(2) =405a(3) =4455a(4) =40095a(5) =312741a(6) =2189187a(7) =14073345a(8) =84440070a(9) =478493730a(10) =2583866142a(11) =13389124554a(12) =66945622770a(13) =324428787270
External references
- oeis: A036222