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A201278 a(n) specifies the quadratic extension sqrt(a(n)) for A201047(n). 6

%I

%S 10,2,2,5,5,130,185,5,2,2,10,10,5,5,10,17,17,5,5,5,53,53,13,13,1490,5,

%T 2,2,5,1565,5

%N a(n) specifies the quadratic extension sqrt(a(n)) for A201047(n).

%C Conjecture (JasiƄski): The numbers in this sequence are multiplicative combinations of: primes congruent to 1 or 2 modulo 4 (A002313), Pythagorean primes (A002144), the number 2, and norms of Gaussian primes A055025.

%Y Cf. A200216, A200656, A201047.

%K nonn,more

%O 1,1

%A _Artur Jasinski_, Nov 29 2011

%E Minor edits by _N. J. A. Sloane_, Feb 23 2014

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Last modified April 6 15:41 EDT 2020. Contains 333276 sequences. (Running on oeis4.)