OFFSET
1,1
COMMENTS
For n>2, a(n) is base at which zero is reached for the function "write f(j) in base j, read as base j+1 and then subtract 1 to give f(j+1)" starting from f(n)=2n^2-1.
EXAMPLE
a(3)=3*2^(3*2^3+3)-1=3*2^27-1=402653184-1=402653183
CROSSREFS
KEYWORD
nonn
AUTHOR
Henry Bottomley, Aug 06 2000
STATUS
approved