Coefficients of 1/sqrt(1-14*x+9*x^2); also, a(n) is the central coefficient of (1+7x+10x^2)^n.
A084774
Coefficients of 1/sqrt(1-14*x+9*x^2); also, a(n) is the central coefficient of (1+7x+10x^2)^n.
Terms
- a(0) =1a(1) =7a(2) =69a(3) =763a(4) =8881a(5) =106407a(6) =1298949a(7) =16065483a(8) =200630241a(9) =2524253767a(10) =31947470149a(11) =406281388443
External references
- oeis: A084774