A Motzkin transform of Jacobsthal numbers.

Terms

a(0) =1a(1) =2a(2) =7a(3) =23a(4) =79a(5) =272a(6) =943a(7) =3278a(8) =11419a(9) =39830a(10) =139057a(11) =485795a(12) =1697905a(13) =5936348a(14) =20760271a(15) =72615143a(16) =254028355a(17) =888758030a(18) =3109714117a(19) =10881403229a(20) =38077702909a(21) =133251869648a(22) =466325356273