Diagonal sums of the Riordan matrix (1/(1-4x),(1-sqrt(1-4x))/(2*sqrt(1-4x))) (A188481).
A188482
Diagonal sums of the Riordan matrix (1/(1-4x),(1-sqrt(1-4x))/(2*sqrt(1-4x))) (A188481).
Terms
- a(0) =1a(1) =4a(2) =17a(3) =71a(4) =295a(5) =1221a(6) =5040a(7) =20761a(8) =85380a(9) =350659a(10) =1438568a(11) =5896098a(12) =24145941a(13) =98812861a(14) =404118745a(15) =1651811920a(16) =6748282361a(17) =27556753703a(18) =112482005583a(19) =458958881572
External references
- oeis: A188482