

A144921


Prime numbers p such that A144912(b, b^2) = p for some even b.


0



7, 13, 19, 31, 37, 43, 61, 67, 73, 79, 97, 103, 109, 127, 139, 151, 157, 163, 181, 193, 199, 211, 223, 229, 241, 271, 277, 283, 307, 313, 331, 337, 349, 367, 373, 379, 397, 409, 421, 433, 439, 457, 463, 487, 499, 523, 541, 547, 571, 577, 601, 607, 613, 619
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OFFSET

1,1


COMMENTS

It is conjectured:
 that every prime is a member of this sequence, A144918, A144919, or A144920;
 that for all even b there exists some k < 10 such that A144912(b, b^2 + k) is prime.


LINKS

Table of n, a(n) for n=1..54.


CROSSREFS

Cf. A000040, A144912, A144918, A144919, A144920
Sequence in context: A107925 A002476 A123365 * A272409 A272406 A272384
Adjacent sequences: A144918 A144919 A144920 * A144922 A144923 A144924


KEYWORD

easy,nonn


AUTHOR

Reikku Kulon, Sep 25 2008


STATUS

approved



