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%I #9 Aug 24 2021 10:15:25
%S 1,11,253,11891,35167,45023,96569,640343,1035529,1652849,2221087,
%T 19588019,30096121,48669863,74901409,88023001,89007677,104391089,
%U 143938531,154261943,308731093,395256917,674608561,725434237,920636893,1737332531,2620923899,4137081047,4183360819,5621571197,6765110957,9090909091,10411295851,14510361371
%N Numbers k such that k^2 divides 10^k + 1.
%H Max Alekseyev, <a href="/A292335/b292335.txt">Table of n, a(n) for n = 1..93</a>
%Y Subsequence of A015958.
%Y Cf. A127100, A128683.
%K nonn
%O 1,2
%A _Max Alekseyev_, Sep 15 2017