Distinct odd elements in 4-Pascal triangle A028275 (by row).

Terms

a(0) =1a(1) =5a(2) =7a(3) =23a(4) =9a(5) =31a(6) =55a(7) =11a(8) =61a(9) =13a(10) =73a(11) =237a(12) =735a(13) =15a(14) =1045a(15) =1947a(16) =115a(17) =1441a(18) =4587a(19) =17a(20) =131a(21) =611a(22) =1937a(23) =4433a(24) =7579a(25) =9867a(26) =19a(27) =185a(28) =21a(29) =205