Binomial transform of (Pell(-n)+Pell(n))/2.

Terms

a(0) =0a(1) =1a(2) =2a(3) =8a(4) =24a(5) =84a(6) =280a(7) =960a(8) =3264a(9) =11152a(10) =38048a(11) =129920a(12) =443520a(13) =1514304a(14) =5170048a(15) =17651712a(16) =60266496a(17) =205762816a(18) =702517760a(19) =2398545920a(20) =8189147136a(21) =27959497728a(22) =95459694592a(23) =325919784960