OFFSET
0,2
COMMENTS
Dedicated to N. J. A. Sloane for his 75th birthday!
LINKS
A. V. Aho and N. J. A. Sloane, Some doubly exponential sequences, The Fibonacci Quarterly, 11 (1973), 429-437.
FORMULA
a(n) ~ c^(2^n), where c = 8.688980833378203252201919626948141475048572223268...
MATHEMATICA
RecurrenceTable[{a[n+1]==a[n]^2+75, a[0]==0}, a, {n, 0, 10}]
NestList[#^2+75&, 0, 10] (* Harvey P. Dale, Jan 14 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Oct 08 2014
STATUS
approved