Diagonal sums of number triangle A132046.

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =8a(5) =15a(6) =24a(7) =41a(8) =66a(9) =109a(10) =176a(11) =287a(12) =464a(13) =753a(14) =1218a(15) =1973a(16) =3192a(17) =5167a(18) =8360a(19) =13529a(20) =21890a(21) =35421a(22) =57312a(23) =92735a(24) =150048a(25) =242785a(26) =392834a(27) =635621a(28) =1028456a(29) =1664079