A335695(n) + A335696(n) + A335697(n).

Terms

a(0) =12a(1) =50a(2) =36a(3) =138a(4) =82a(5) =426a(6) =369a(7) =1265a(8) =1339a(9) =4198a(10) =5270a(11) =17574a(12) =26101a(13) =84925a(14) =151179a(15) =502626a(16) =1014453a(17) =3404473a(18) =7511829a(19) =25248330a(20) =59077506a(21) =198103996a(22) =483649593a(23) =1616414549