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For odd n, n^2 is odd so the two primes must be opposite in parity. Lesser prime must be 2 and greater prime must be n^2-2. Thus for odd n, n^2 is the sum of two primes iff n^2-2 is prime. (Chandler)
Table of n, a(n) for n=1..81.
a(n) = n^2 - A106545(n).
a(10)=0 because 10^2=100=97+3 (sum of two primes)
a(11)=11^2=121, which is impossible to obtain summing two primes.
Cf. A106545-A106548, A106562-A106564, A106571, A106573-A106575, A106577.
Sequence in context: A045509 A033187 A106547 * A079842 A014756 A014748
Adjacent sequences: A106541 A106542 A106543 * A106545 A106546 A106547
Alexandre Wajnberg, May 08 2005
Extended by Ray Chandler, May 12 2005