Triangle by rows, A001047 convolved with A000079.

Terms

a(0) =1a(1) =2a(2) =5a(3) =4a(4) =10a(5) =19a(6) =8a(7) =20a(8) =38a(9) =65a(10) =16a(11) =40a(12) =76a(13) =130a(14) =211a(15) =32a(16) =80a(17) =152a(18) =260a(19) =422a(20) =665a(21) =64a(22) =160a(23) =304a(24) =520a(25) =844a(26) =1330a(27) =2059a(28) =128a(29) =320