Number of ways to choose an odd partition of each part of an odd partition of 2n+1.

Terms

a(0) =1a(1) =3a(2) =6a(3) =15a(4) =37a(5) =80a(6) =183a(7) =428a(8) =893a(9) =1944a(10) =4223a(11) =8691a(12) =18128a(13) =37529a(14) =75738a(15) =153460a(16) =308829a(17) =612006a(18) =1211097a(19) =2386016a(20) =4648229a(21) =9042678a(22) =17528035a(23) =33645928a(24) =64508161a(25) =123178953a(26) =233709589a(27) =442583046a(28) =834923483a(29) =1567271495