Numbers k such that A026400(k) is odd.

Terms

a(0) =1a(1) =3a(2) =6a(3) =7a(4) =9a(5) =11a(6) =12a(7) =16a(8) =18a(9) =19a(10) =22a(11) =24a(12) =25a(13) =27a(14) =28a(15) =30a(16) =33a(17) =34a(18) =36a(19) =39a(20) =43a(21) =44a(22) =45a(23) =46a(24) =48a(25) =50a(26) =52a(27) =53a(28) =56a(29) =57