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Numbers k such that A000055(k) is divisible by k.
2

%I #5 Jul 08 2020 02:24:36

%S 1,6,90,1031,1099

%N Numbers k such that A000055(k) is divisible by k.

%C No other terms below 40000.

%e 90 is in the sequence because A000055(90) = 90*179212383627255715871103677440244414

%Y Cf. A000055, A051420, A119642, A336039.

%K nonn,more

%O 1,2

%A _Vaclav Kotesovec_, Jul 08 2020