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Numbers such that the sum of squares of their prime factors (taken with multiplicity) is a prime.
10

%I #7 May 10 2013 17:25:19

%S 6,10,12,14,26,34,40,45,54,56,63,74,75,80,90,94,96,99,104,105,126,134,

%T 146,147,152,153,171,176,184,194,206,207,231,232,234,250,261,273,274,

%U 296,300,306,326,328,334,342,344,345,350,357,363,369,376,384,386,387

%N Numbers such that the sum of squares of their prime factors (taken with multiplicity) is a prime.

%H Hieronymus Fischer, <a href="/A134616/b134616.txt">Table of n, a(n) for n = 1..10000</a>

%e a(2)=10, since 10=2*5 and 2^2+5^2=29 which is prime.

%Y Cf. A001597, A025475, A134333, A134344, A134376.

%Y Cf. A134600, A134602, A134605, A134608, A134612, A134619, A134621.

%K nonn

%O 1,1

%A _Hieronymus Fischer_, Nov 11 2007

%E Minor edits by the author, May 06 2013