Convolution triangle of A000129(n) (Pell numbers).

Terms

a(0) =1a(1) =2a(2) =1a(3) =5a(4) =4a(5) =1a(6) =12a(7) =14a(8) =6a(9) =1a(10) =29a(11) =44a(12) =27a(13) =8a(14) =1a(15) =70a(16) =131a(17) =104a(18) =44a(19) =10a(20) =1a(21) =169a(22) =376a(23) =366a(24) =200a(25) =65a(26) =12a(27) =1a(28) =408a(29) =1052