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a(n) = prime(7*n-3).
1

%I #18 Sep 08 2022 08:44:50

%S 7,31,61,97,131,167,199,241,281,331,373,419,457,499,557,599,641,677,

%T 733,773,827,877,929,977,1021,1063,1109,1171,1223,1279,1307,1381,1439,

%U 1483,1531,1579,1619,1669,1733,1787,1861,1901,1973,2011,2069,2113,2161

%N a(n) = prime(7*n-3).

%H Ivan Panchenko, <a href="/A031388/b031388.txt">Table of n, a(n) for n = 1..1000</a>

%o (Magma) [ NthPrime(7*n-3): n in [1..1000] ]; // _Vincenzo Librandi_, Apr 10 2011

%K nonn

%O 1,1

%A _Jeff Burch_

%E Corrected and extended by _Jud McCranie_, Jan 03 2001