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a(n) = Product_{d|n, d>1} prime(1+(d mod 8)).
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%I #7 Oct 08 2018 08:07:07

%S 1,5,7,55,13,595,19,110,21,325,7,71995,13,1615,1729,220,3,8925,7,

%T 39325,1729,595,19,287980,39,325,147,195415,13,12492025,19,440,147,75,

%U 1729,11879175,13,595,1729,157300,3,12492025,7,71995,67431,1615,19,1151920,57,4875,147,39325,13,1062075,1729,781660,147,325,7,182895738025,13,1615,98553,880,507

%N a(n) = Product_{d|n, d>1} prime(1+(d mod 8)).

%H Antti Karttunen, <a href="/A320108/b320108.txt">Table of n, a(n) for n = 1..8192</a>

%F a(n) = Product_{d|n, d>1} prime(1+(d mod 8)).

%o (PARI) A320108(n) = { my(m=1); fordiv(n,d,if(d>1, m *= prime(1+(d%8)))); (m); };

%Y Cf. A080682, A319987, A320112, A320114, A320116.

%Y Cf. A320109 (rgs-transform).

%K nonn

%O 1,2

%A _Antti Karttunen_, Oct 06 2018