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A106133
Numbers k such that the k-th semiprime == 8 (mod k).
1
1, 2, 62, 65, 82, 613417, 613423, 613425, 613427, 613435, 613446, 613515, 613517, 613606, 6384425573, 6384425633, 6384425637, 6384425639, 6384425645, 6384425651
OFFSET
1,2
COMMENTS
a(21) > 10^12. - Lucas A. Brown, Oct 18 2020
EXAMPLE
a(3)=62 is a term because the 62nd semiprime (i.e., 194) == 8 (mod 62).
CROSSREFS
Cf. A001358.
Sequence in context: A347606 A094478 A273090 * A064738 A067825 A239417
KEYWORD
nonn,hard,more
AUTHOR
Shyam Sunder Gupta, May 07 2005
EXTENSIONS
a(15)-a(20) by Lucas A. Brown, Oct 18 2020
a(1), a(2) by Lucas A. Brown, Nov 22 2020
STATUS
approved