Third column of triangle A054450 (partial row sums of unsigned Chebyshev triangle A049310).

Terms

a(0) =1a(1) =1a(2) =4a(3) =5a(4) =12a(5) =17a(6) =33a(7) =50a(8) =88a(9) =138a(10) =232a(11) =370a(12) =609a(13) =979a(14) =1596a(15) =2575a(16) =4180a(17) =6755a(18) =10945a(19) =17700a(20) =28656a(21) =46356a(22) =75024a(23) =121380a(24) =196417a(25) =317797a(26) =514228a(27) =832025a(28) =1346268a(29) =2178293