a(n) = A192525(n)/2.

Terms

a(0) =1a(1) =4a(2) =19a(3) =88a(4) =94a(5) =433a(6) =439a(7) =469a(8) =2020a(9) =2128a(10) =2158a(11) =2164a(12) =2194a(13) =2344a(14) =9925a(15) =9955a(16) =10093a(17) =10099a(18) =10603a(19) =10639a(20) =10783a(21) =10789a(22) =10819a(23) =10969a(24) =11719a(25) =46288a(26) =46456a(27) =48910a(28) =48940a(29) =49450