Numbers k such that A026600(k) = 2.

Terms

a(0) =2a(1) =4a(2) =9a(3) =10a(4) =15a(5) =17a(6) =21a(7) =23a(8) =25a(9) =28a(10) =33a(11) =35a(12) =39a(13) =41a(14) =43a(15) =47a(16) =49a(17) =54a(18) =57a(19) =59a(20) =61a(21) =65a(22) =67a(23) =72a(24) =73a(25) =78a(26) =80a(27) =82a(28) =87a(29) =89