A119384 Ten's complement of the factorials.

9, 8, 4, 76, 880, 280, 4960, 59680, 637120, 6371200, 60083200, 520998400, 3772979200, 12821708800, 8692325632000, 79077210112000, 644312571904000, 3597626294272000, 878354899591168000, 7567097991823360000, 48909057828290560000, 8875999272222392320000

Offset: 1

Author

Jason Earls, Jul 24 2006

Keywords

• base
• easy
• nonn

References

• J. Earls & J. Rogers, 0.1361015212836455566..., Lulu Press, NY, 2006, p. 32.

Links

• Amazon.com, 0.1361015212836455566...(Title of split novel)

Crossrefs

Cf. A000142, A110396.

Programs

Mathematica

Table[10^Length[IntegerDigits[n!]]-n!,{n,22}] (* James C. McMahon, Sep 13 2024 *)

Formula

a(n) = 10^length(n!) - n!.

Extensions

a(21)-a(22) from James C. McMahon, Sep 13 2024