a(n) = T(2n-1,n), where T is the array defined in A024996.

A026072

a(n) = T(2n-1,n), where T is the array defined in A024996.

Terms

    a(0) =1a(1) =3a(2) =13a(3) =76a(4) =427a(5) =2427a(6) =13871a(7) =79729a(8) =460473a(9) =2670394a(10) =15540822a(11) =90717305a(12) =530946697a(13) =3114680815a(14) =18308774295a(15) =107817336510a(16) =635942014275

External references