a(n) is the least number such that the set {p_1,p_2,...,p_a(n)} contains all residues modulo p_n (p_m is m-th prime).
2, 4, 8, 10, 14, 27, 27, 43, 33, 66, 64, 85, 75, 90, 163, 111, 127, 178, 170, 145, 172
3 seqfan posts
Sun May 23 08:54:35 CEST 2010 [seqfan] Re: A178215, A178216
Sun May 23 08:15:19 CEST 2010 [seqfan] Re: A178215, A178216
Sat May 22 23:15:14 CEST 2010 [seqfan] A178215, A178216
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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