Convolution of Fibonacci and Jacobsthal numbers.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =6a(5) =13a(6) =30a(7) =64a(8) =137a(9) =286a(10) =594a(11) =1221a(12) =2498a(13) =5084a(14) =10313a(15) =20858a(16) =42094a(17) =84797a(18) =170582a(19) =342760a(20) =688105a(21) =1380390a(22) =2767546a(23) =5546037a(24) =11109786a(25) =22248228a(26) =44542825a(27) =89160674a(28) =178442742a(29) =357081901