OFFSET
0,4
COMMENTS
The idea here is to associate a normal Hermite type distribution of the sort: a(n)=a(n-1)+f(n-2)*a(n-2); with the Pi digits.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..1000
FORMULA
a(n) = a(n-1) + a(n-2)*floor( Pi*10^(n-2) mod 10 ).
MATHEMATICA
Clear[a, n]; a[0] = 0; a[1] = 1; a[n_] := a[n] = a[n - 1] + Floor[Mod[N[Pi*10^(n - 2), 1000], 10]]*a[n - 2]; Table[a[n], {n, 0, 30}]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Roger L. Bagula and Alexander R. Povolotsky, Nov 27 2008
STATUS
approved