a(-1) = 1, a(n) = Sum_{k=0..n} A034851(n,k)*a(k-1) where A034851(n,k) are entries in Losanitsch's triangle.

A102814

a(-1) = 1, a(n) = Sum_{k=0..n} A034851(n,k)*a(k-1) where A034851(n,k) are entries in Losanitsch's triangle.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =11a(5) =30a(6) =103a(7) =354a(8) =1440a(9) =5911a(10) =27651a(11) =131062a(12) =690543a(13) =3693765a(14) =21585068a(15) =128165652a(16) =820859645a(17) =5343318222a(18) =37155889171a(19) =262577578134

External references