First differences of A016041.

Terms

a(0) =0a(1) =2a(2) =2a(3) =10a(4) =14a(5) =42a(6) =34a(7) =20a(8) =130a(9) =56a(10) =130a(11) =750a(12) =260a(13) =118a(14) =48a(15) =168a(16) =44a(17) =48a(18) =3010a(19) =224a(20) =76a(21) =368a(22) =312a(23) =112a(24) =230a(25) =616a(26) =780a(27) =152a(28) =160a(29) =272