2*A084158 (twice Pell triangles).

Terms

a(0) =0a(1) =2a(2) =10a(3) =60a(4) =348a(5) =2030a(6) =11830a(7) =68952a(8) =401880a(9) =2342330a(10) =13652098a(11) =79570260a(12) =463769460a(13) =2703046502a(14) =15754509550a(15) =91824010800a(16) =535189555248