login
A225590
Primes p such that A217015(p) is a prime number. That is, when applying the walk of a square spiral to the data of rotated-square spiral, on step p a prime number is hit.
1
2, 11, 17, 23, 53, 61, 67, 139, 149, 151, 163, 251, 263, 269, 281, 397, 421, 431, 541, 547, 557, 607, 619, 743, 773, 809, 1021, 1039, 1229, 1279, 1291, 1303, 1361, 1553, 1601, 1619, 1637, 1871, 1901, 1949, 2003, 2239, 2251, 2267, 2281, 2287, 2309, 2311, 2347, 2381, 2393
OFFSET
1,1
COMMENTS
Corresponding primes with prime indices, in sorted order: A225754.
CROSSREFS
KEYWORD
nonn
AUTHOR
Alex Ratushnyak, May 15 2013
STATUS
approved