Triangle, read by rows, defined by T(n,k) = A000108(n-k)*A001147(k)*C(n,2*k), for k=0..[n/2], n>=0, where A000108 is the Catalan numbers and A001147 is the double factorials.

A125080

Triangle, read by rows, defined by T(n,k) = A000108(n-k)*A001147(k)*C(n,2*k), for k=0..[n/2], n>=0, where A000108 is the Catalan numbers and A001147 is the double factorials.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =5a(5) =6a(6) =14a(7) =30a(8) =6a(9) =42a(10) =140a(11) =75a(12) =132a(13) =630a(14) =630a(15) =75a(16) =429a(17) =2772a(18) =4410a(19) =1470a(20) =1430a(21) =12012a(22) =27720a(23) =17640a(24) =1470a(25) =4862a(26) =51480a(27) =162162a(28) =166320a(29) =39690

External references