a(n) is the least prime of class n (sometimes written n+) according to the Erdos-Selfridge classification of primes.
2, 13, 37, 73, 1021, 2917, 15013, 49681, 532801, 1065601, 8524807, 68198461
2 seqfan posts
Sat May 29 00:10:58 CEST 2010 [seqfan] Re: Primes by rank