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A115972
a(n) = least prime P(n) such that P(n)-2*p(n) is prime and P(n+1)>P(n) with p(n)=n-th prime.
0
11, 29, 149, 307, 1151, 2503, 8501, 30631, 81509, 85991, 190471, 404671, 535481, 840439, 1101071, 2127269, 4640717, 6613753, 6958801, 10343903, 24120379, 49269739, 83751287, 101649827, 166726561, 273469943, 310845889
OFFSET
1,1
EXAMPLE
p(1)=2, 11-2*p(1)=7 prime so a(1)=11
CROSSREFS
Sequence in context: A168171 A249993 A080083 * A099109 A352432 A302091
KEYWORD
nonn
AUTHOR
Pierre CAMI, Mar 14 2006
STATUS
approved