Numbers of the form i*j + j*k + k*i, where 1 <= i < j < k.

Terms

a(0) =11a(1) =14a(2) =17a(3) =19a(4) =20a(5) =23a(6) =26a(7) =27a(8) =29a(9) =31a(10) =32a(11) =34a(12) =35a(13) =36a(14) =38a(15) =39a(16) =41a(17) =43a(18) =44a(19) =46a(20) =47a(21) =49a(22) =50a(23) =51a(24) =52a(25) =53a(26) =54a(27) =55a(28) =56a(29) =59