Numbers k such that 9k+4 are terms in A072841.

Terms

a(0) =1a(1) =17a(2) =101a(3) =501a(4) =1627a(5) =2133a(6) =2143a(7) =2201a(8) =2243a(9) =3086a(10) =3536a(11) =3869a(12) =4163a(13) =4398a(14) =4477a(15) =5598a(16) =5948a(17) =5982a(18) =6101a(19) =6998a(20) =7113a(21) =7807a(22) =8501a(23) =8693a(24) =9177a(25) =9928a(26) =10927a(27) =11127a(28) =11177a(29) =11545