OFFSET
0,2
LINKS
FORMULA
a(n) = 99^n.
From Elmo R. Oliveira, Aug 11 2024: (Start)
G.f.: 1/(1-99*x).
E.g.f.: exp(99*x).
a(n) = 99*a(n-1) for n > 0. (End)
EXAMPLE
a(4) = 96059601 = 100^4 - 4*100^3 + 6*100^2 - 4*100 + 1 = 100000000 - 4000000 + 60000 - 400 - 1: 100000000 -> 96000000 -> 96060000 -> 96059600 -> 96059601.
a(8) = 99^8 = 9227446944279201.
CROSSREFS
KEYWORD
nonn,easy,less
AUTHOR
Eliora Ben-Gurion, Nov 09 2019
STATUS
approved