The Ze2 sums of the Pell-Jacobsthal triangle A013609.

Terms

a(0) =1a(1) =2a(2) =5a(3) =16a(4) =57a(5) =206a(6) =737a(7) =2612a(8) =9213a(9) =32442a(10) =114205a(11) =402072a(12) =1415713a(13) =4985126a(14) =17554489a(15) =61816252a(16) =217679141a(17) =766531986a(18) =2699251381a(19) =9505089568a(20) =33471028105a(21) =117864194430a(22) =415044573969