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 A144839 a(n) = round(phi^(7^n)) where phi = 1.6180339887498948482... = (sqrt(5)+1)/2. 4
 29, 17393796001, 481682208844384447843365760878364816732549453120338354329505085763436029 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n)=G^(7^n)+(1-G)^(7^n) = G^(7^n)+(-G)^(-7^n) where G is Golden ratio = (1+Sqrt[5])/2 = 1.618033989 [From Artur Jasinski, Oct 05 2008] MATHEMATICA c = N[GoldenRatio, 1000]; Table[Round[c^(7^n)], {n, 1, 5}] (*Artur Jasinski*) c = (1 + Sqrt[5])/2; Table[Expand[c^(7^n) + (1 - c)^(7^n)], {n, 0, 5}] [From Artur Jasinski, Oct 05 2008] CROSSREFS Cf. A001566, A006267, A144836, A144837, A144838, A144839. Sequence in context: A087528 A307622 A219015 * A124992 A296522 A023926 Adjacent sequences:  A144836 A144837 A144838 * A144840 A144841 A144842 KEYWORD nonn,bref AUTHOR Artur Jasinski, Sep 22 2008 STATUS approved

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Last modified March 29 05:39 EDT 2020. Contains 333105 sequences. (Running on oeis4.)