G.f.: exp( Sum_{n>=1} 6 * A084214(n) * x^n/n ) where g.f. of A084214 is (1+x^2)/((1+x)*(1-2*x)).

A182349

G.f.: exp( Sum_{n>=1} 6 * A084214(n) * x^n/n ) where g.f. of A084214 is (1+x^2)/((1+x)*(1-2*x)).

Terms

    a(0) =1a(1) =6a(2) =30a(3) =120a(4) =435a(5) =1446a(6) =4536a(7) =13560a(8) =39045a(9) =108950a(10) =296178a(11) =787368a(12) =2053335a(13) =5265750a(14) =13306380a(15) =33188040a(16) =81815145a(17) =199585830a(18) =482290630a(19) =1155444120a(20) =2746489851a(21) =6481600326a(22) =15195437280a(23) =35407315800a(24) =82038719565a(25) =189089191926a(26) =433704632346a(27) =990244936520

External references