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A119384
Ten's complement of the factorials.
0
9, 8, 4, 76, 880, 280, 4960, 59680, 637120, 6371200, 60083200, 520998400, 3772979200, 12821708800, 8692325632000, 79077210112000, 644312571904000, 3597626294272000, 878354899591168000, 7567097991823360000, 48909057828290560000, 8875999272222392320000
OFFSET
1,1
REFERENCES
J. Earls & J. Rogers, 0.1361015212836455566..., Lulu Press, NY, 2006, p. 32.
FORMULA
a(n) = 10^length(n!) - n!.
MATHEMATICA
Table[10^Length[IntegerDigits[n!]]-n!, {n, 22}] (* James C. McMahon, Sep 13 2024 *)
CROSSREFS
Sequence in context: A343057 A155690 A318135 * A243378 A371219 A256165
KEYWORD
base,easy,nonn
AUTHOR
Jason Earls, Jul 24 2006
EXTENSIONS
a(21)-a(22) from James C. McMahon, Sep 13 2024
STATUS
approved