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%I #5 May 15 2013 19:48:04
%S 5,11,13,29,31,41,67,71,73,79,127,137,193,199,211,293,313,421,499,503,
%T 619,631,647,661,673,773,811,967,991,1013,1129,1163,1553,1567,1597,
%U 1601,1607,1747,1777,1783,1789,1801,1831,1861,1997,2039,2053,2087,2099,2113,2287,2311
%N Primes p such that A217296(p) is a prime number. That is, when applying the walk of rotated-square spiral to the data of square spiral, on step p a prime number is hit.
%C Corresponding primes with prime indices, in sorted order: A225590. The intersection of a(n) with A225590 begins: 11, 67, 421, 619, 773, 1553, 1601, 2287, 2311, 2381, 2609, 3169, 3181, 3491, 3511, 4157, 4597, 4639, 6263, 7129, 7177, 7193, 8291, 9277.
%Y Cf. A217015, A217296, A215468, A214526, A225590.
%K nonn
%O 1,1
%A _Alex Ratushnyak_, May 15 2013