A067322 Odd-indexed members of A067302.

3, 160, 21504, 3867840, 785255680, 169748686848, 38094656593920, 8761529890717696, 2050020136793604096, 485760548730263568384, 116217935644216514314240, 28016590108689074277580800

Offset: 0

Author

Wolfdieter Lang, Feb 05 2002

Keywords

• nonn
• easy

Crossrefs

Cf. A067303 (even-indexed members of A067302).

Formula

a(n) = A067302(2n+1) = (2*n+3)*A067297(2*n+1)/2.

G.f.: A(x) = (2*x*(d/dx)g(x) + 3*g(x)) with g(x) g.f. of A067321.