A diagonal of the triangle A128080 of coefficients of q in the q-analog of the odd double factorials: a(n) = A128080(n+1,n).
A128082
A diagonal of the triangle A128080 of coefficients of q in the q-analog of the odd double factorials: a(n) = A128080(n+1,n).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =9a(4) =31a(5) =110a(6) =400a(7) =1477a(8) =5516a(9) =20775a(10) =78762a(11) =300179a(12) =1148995a(13) =4413877a(14) =17007798a(15) =65707390a(16) =254430080a(17) =987162527a(18) =3836843836a(19) =14936223511a(20) =58226118626a(21) =227271470103a(22) =888117198666
External references
- oeis: A128082