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A248545 a(n+1) = a(n)^2 + 75. 0
0, 75, 5700, 32490075, 1055604973505700, 1114301860089969598947932490075, 1241668635399966182910364962424859894024949485439789973505700 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Dedicated to N. J. A. Sloane for his 75th birthday!

LINKS

Table of n, a(n) for n=0..6.

A. V. Aho and N. J. A. Sloane, Some doubly exponential sequences, The Fibonacci Quarterly, 11 (1973), 429-437.

Index entries for sequences of form a(n+1)=a(n)^2 + ...

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

Cf. A003095.

Sequence in context: A207552 A207313 A206696 * A114910 A294983 A093275

Adjacent sequences:  A248542 A248543 A248544 * A248546 A248547 A248548

KEYWORD

nonn

AUTHOR

Vaclav Kotesovec, Oct 08 2014

STATUS

approved

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Last modified January 29 01:54 EST 2020. Contains 331328 sequences. (Running on oeis4.)