Sequence such that the Hankel transform of a(n+1) satisfies a generalized Somos-4 recurrence.

A160702

Sequence such that the Hankel transform of a(n+1) satisfies a generalized Somos-4 recurrence.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =5a(4) =19a(5) =79a(6) =333a(7) =1441a(8) =6351a(9) =28451a(10) =129185a(11) =593373a(12) =2752427a(13) =12876343a(14) =60684533a(15) =287857209a(16) =1373286375a(17) =6584979659a(18) =31719337353a(19) =153416338549a(20) =744777567043

External references