Terms in A003325 which are sum of three subsequent terms in A003325.

Terms

a(0) =1674a(1) =3059a(2) =5488a(3) =24696a(4) =29744a(5) =50661a(6) =67375a(7) =69095a(8) =109655a(9) =148608a(10) =164502a(11) =247589a(12) =248976a(13) =407511a(14) =421876a(15) =421911a(16) =684216a(17) =762048a(18) =877058a(19) =884763a(20) =942920a(21) =1265544a(22) =1725542a(23) =1817179a(24) =1975545a(25) =2240000a(26) =3133809a(27) =3819905a(28) =4120389