a(1) = 2; and for n > 1, a(n) = A341512(n) + A347096(n).

Terms

a(0) =2a(1) =0a(2) =0a(3) =1a(4) =0a(5) =4a(6) =0a(7) =21a(8) =4a(9) =4a(10) =0a(11) =110a(12) =0a(13) =8a(14) =8a(15) =259a(16) =0a(17) =224a(18) =0a(19) =154a(20) =16a(21) =4a(22) =0a(23) =1548a(24) =4a(25) =8a(26) =176a(27) =316a(28) =0a(29) =592