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Numbers k such that m*2^k - 1 is nonprime for all coefficients m in the range 0 <= m <= k.
3

%I #10 Nov 09 2019 03:14:52

%S 1,22,24,65,110,112,135,137,166,167,218,219,220,228,229,239,257,280,

%T 310,344,345,346,398,399,403,404,405,430,439,440,475,494,504,505,508,

%U 522,524,534,535,536,557,559,592,619,620,624,625,626,679,703,705,706

%N Numbers k such that m*2^k - 1 is nonprime for all coefficients m in the range 0 <= m <= k.

%Y Cf. A061410, A061412, A061413, A061414, A061415.

%K nonn

%O 1,2

%A _Patrick De Geest_, May 15 2001

%E Name edited and Offset changed by _Jon E. Schoenfield_, Oct 26 2019