a(n) = 11*binomial(10*n + 11, n)/(10*n + 11).
A229963
a(n) = 11*binomial(10*n + 11, n)/(10*n + 11).
Terms
- a(0) =1a(1) =11a(2) =165a(3) =2860a(4) =53900a(5) =1072797a(6) =22188859a(7) =472214600a(8) =10273141395a(9) =227440759700
External references
- oeis: A229963