A056919 Numerators of continued fraction for left factorial.

0, 1, 1, 0, -2, -2, 4, 10, -6, -46, -16, 214, 310, -974, -3144, 3674, 28826, -566, -260000, -254906, 2345094, 4894154, -20901880, -74737574, 176084986, 1072935874, -1216168944, -15164335306, 1862029910, 214162724194, 186232275544, -3026208587366, -6005924996070, 42413412401786

Offset: 0

Author

Aleksandar Petojevic, Sep 05 2000

Keywords

• sign
• frac
• easy

Formula

a(0)=0; a(1)=1; a(n) = a(n-1) - floor(n/2)*a(n-2).

Extensions

More terms from James Sellers, Sep 06 2000