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First row of array in A081998.
4

%I #9 Aug 31 2018 16:50:36

%S 1,2,7,9,29,31,71,73,143,149,229,233,359,361,485,487,629,631,821,823,

%T 1031,1033,1277,1279,1553,1559,1873,1877,2221,2237,2593,2599,2971,

%U 2999,3433,3449,3907,3911,4429,4441,4969,4973,5557,5561,6131,6133,6761,6763

%N First row of array in A081998.

%H Charlie Neder, <a href="/A081999/b081999.txt">Table of n, a(n) for n = 0..140</a>

%Y Cf. A081998, A082000, A082001.

%K nonn

%O 0,2

%A _Amarnath Murthy_, Apr 05 2003

%E a(4)-a(47) from _Charlie Neder_, Aug 31 2018