Hexagonal numbers (A000384) which are sum of 2 other hexagonal numbers > 0.

Terms

a(0) =276a(1) =703a(2) =861a(3) =1225a(4) =2850a(5) =3003a(6) =4560a(7) =5151a(8) =8128a(9) =10878a(10) =11781a(11) =12090a(12) =12720a(13) =13366a(14) =14706a(15) =15400a(16) =16110a(17) =18721a(18) =21115a(19) =22366a(20) =24090a(21) =24531a(22) =26796a(23) =29161a(24) =29646a(25) =31125a(26) =32131a(27) =33153a(28) =36315a(29) =38503