3-almost prime octagonal numbers.

Terms

a(0) =8a(1) =645a(2) =833a(3) =1045a(4) =1281a(5) =1825a(6) =2465a(7) =2821a(8) =3201a(9) =3605a(10) =4961a(11) =7701a(12) =8965a(13) =12545a(14) =15841a(15) =17633a(16) =18565a(17) =20501a(18) =23585a(19) =24661a(20) =25761a(21) =26885a(22) =28033a(23) =30401a(24) =34133a(25) =36741a(26) =45141a(27) =51221a(28) =52801a(29) =57685