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Iterated Stella Octangula numbers A007588.
2

%I #11 Jun 09 2023 09:44:18

%S 2,14,5474,328053267374,70609493887317824553444331216711874,

%T 704075595895578790602913140874091028795793004193695613020210569466609876113017694526357948165550233559374

%N Iterated Stella Octangula numbers A007588.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/StellaOctangulaNumber.html">Stella Octangula Number.</a>.

%F a(0) = 2; a(n+1) = a(n)*(2*a(n)^2 - 1) = A007588(a(n)).

%Y Cf. A007588, A106482, A106483.

%K easy,nonn

%O 0,1

%A _Jonathan Vos Post_, May 03 2005