Column 1 of triangle A128592; a(n) = coefficient of q^(n+2) in the q-analog of the odd double factorials (2n+3)!! for n>=0.
A128593
Column 1 of triangle A128592; a(n) = coefficient of q^(n+2) in the q-analog of the odd double factorials (2n+3)!! for n>=0.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =45a(4) =170a(5) =644a(6) =2451a(7) =9365a(8) =35908a(9) =138104a(10) =532589a(11) =2058782a(12) =7975216a(13) =30951921a(14) =120326060a(15) =468473348a(16) =1826415556a(17) =7129330988a(18) =27860219331a(19) =108984557708a(20) =426730087879
External references
- oeis: A128593