a(n) = a(n-2) * a(n-3) + a(n-3), n>3. a(1) = a(2) = a(3) = 1.

A079069

a(n) = a(n-2) * a(n-3) + a(n-3), n>3. a(1) = a(2) = a(3) = 1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =3a(6) =6a(7) =8a(8) =21a(9) =54a(10) =176a(11) =1155a(12) =9558a(13) =203456a(14) =11040645a(15) =1944642006

External references