OFFSET
1,1
COMMENTS
Each term in the sequence is prime p which yields 5 semiprimes in arithmetic progression with common difference of 2.
LINKS
K. D. Bajpai, Table of n, a(n) for n = 1..500
EXAMPLE
a(1) = 211 is prime: 213, 215, 217, 219 and 221 are semiprimes.
a(2) = 1381 is prime: 1383, 1385, 1387, 1389 and 1391 are semiprimes.
MAPLE
CROSSREFS
KEYWORD
nonn
AUTHOR
K. D. Bajpai, May 03 2014
STATUS
approved