Sum of the two smallest parts from the partitions of 4n into 4 parts with smallest part = 1.

Terms

a(0) =2a(1) =9a(2) =27a(3) =61a(4) =108a(5) =178a(6) =276a(7) =395a(8) =549a(9) =743a(10) =966a(11) =1236a(12) =1558a(13) =1917a(14) =2335a(15) =2817a(16) =3344a(17) =3942a(18) =4616a(19) =5343a(20) =6153a(21) =7051a(22) =8010a(23) =9064a(24) =10218a(25) =11441a(26) =12771a(27) =14213a(28) =15732a(29) =17370