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A059903 Periodic part of continued fraction for sqrt(n), encoded by raising successive primes to the terms. If sqrt(n)=c0+[c1,c2,c3...] then a(n)=2^c1*3^c2*5^c3*... 1

%I

%S 1,4,18,1,16,324,72030,162,1,64,5832,2916,372027810,10588410,1458,1,

%T 256,104976,1036385881030500,26244,9421689827550,4946387159463750,

%U 1556496270,13122,1,1024,1889568,2542277241000,76256028326940,236196

%N Periodic part of continued fraction for sqrt(n), encoded by raising successive primes to the terms. If sqrt(n)=c0+[c1,c2,c3...] then a(n)=2^c1*3^c2*5^c3*...

%C Could be made less gigantic by omitting final terms in continued fraction, which are always 2*c0.

%F a(n)=A059900(A059904(n))

%e sqrt(14)=3+[1,2,1,6] so a(14)=2^1*3^2*5^1*7^6=10588410.

%Y A059904, A059900, A003285.

%K easy,nonn

%O 0,2

%A _Marc LeBrun_, Feb 07 2001

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Last modified September 27 02:49 EDT 2020. Contains 337380 sequences. (Running on oeis4.)