a(n) = [x^n] sqrt(1 - 4*x)/(1 - 8*x). Row sums of A380865.
A380864
a(n) = [x^n] sqrt(1 - 4*x)/(1 - 8*x). Row sums of A380865.
Terms
- a(0) =1a(1) =6a(2) =46a(3) =364a(4) =2902a(5) =23188a(6) =185420a(7) =1483096a(8) =11863910a(9) =94908420a(10) =759257636a(11) =6074027496a(12) =48592102396a(13) =388736403144
External references
- oeis: A380864