Odd m in A352928.

Terms

a(0) =1a(1) =9a(2) =15a(3) =75a(4) =105a(5) =315a(6) =525a(7) =735a(8) =945a(9) =1155a(10) =1365a(11) =1575a(12) =1995a(13) =3465a(14) =4305a(15) =5775a(16) =6615a(17) =7035a(18) =8085a(19) =8925a(20) =9765a(21) =10395a(22) =11235a(23) =12495a(24) =12705a(25) =13545a(26) =15015a(27) =19635a(28) =26565a(29) =28875