Numbers that are not the sum of 3 hexagonal numbers (probably finite).

Terms

a(0) =4a(1) =5a(2) =9a(3) =10a(4) =11a(5) =14a(6) =19a(7) =20a(8) =23a(9) =24a(10) =25a(11) =26a(12) =32a(13) =33a(14) =37a(15) =38a(16) =39a(17) =41a(18) =42a(19) =48a(20) =50a(21) =53a(22) =54a(23) =55a(24) =59a(25) =63a(26) =64a(27) =65a(28) =69a(29) =70