%I #24 Nov 17 2019 03:50:33
%S 341,1387,2047,3277,4033,4371,4681,5461,8321,8911,10261,13747,14491,
%T 15709,15841,19951,29341,31621,42799,49141,49981,52633,60787,65077,
%U 65281,74665,80581,83333,85489,88357,90751,104653,123251,129921,130561,137149
%N Strong pseudoprimes to base 4.
%H Amiram Eldar, <a href="/A020230/b020230.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..229 from R. J. Mathar)
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/StrongPseudoprime.html">Strong Pseudoprime</a>
%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>
%Y Cf. A020136 (base 4), A001262 (base 2), A020229 (base 3), A020231 (base 5), A020232 (base 6), A020233 (base 7), A020234 (base 8), A020235 (base 9), A020236 (base 10), A020237 (base 11), A020238 (base 12).
%K nonn
%O 1,1
%A _David W. Wilson_