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Numbers k such that k and k^2+1 have equal sums of distinct prime divisors.
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%I #22 Apr 25 2023 23:07:47

%S 7,1384230,1437236,1770802,2090663,4406787,8493543,8691863,11576449,

%T 16147463,18216983,22128632,25156787,32929141,43106430,43768187,

%U 47500230,50085263,50497485,59461592,66419007,66507421,71182692,95268412,99848687,164163693

%N Numbers k such that k and k^2+1 have equal sums of distinct prime divisors.

%C Numbers k such that A008472(k) = A008472(k^2+1).

%o (PARI) is_A362152(n) = vecsum(factor(n)[,1])==vecsum(factor(n^2+1)[,1]);

%Y Cf. A008472, A006145.

%K nonn

%O 1,1

%A _Max Alekseyev_, Apr 18 2023