Convolution of Lucas and Jacobsthal numbers.

Terms

a(0) =0a(1) =2a(2) =3a(3) =10a(4) =20a(5) =47a(6) =98a(7) =210a(8) =435a(9) =902a(10) =1848a(11) =3775a(12) =7670a(13) =15542a(14) =31403a(15) =63330a(16) =127500a(17) =256367a(18) =514938a(19) =1033450a(20) =2072675a(21) =4154702a(22) =8324528a(23) =16673535a(24) =33386670a(25) =66837422a(26) =133778523a(27) =267724810a(28) =535721060a(29) =1071881327