A204991 - OEIS

A204991

2^k-2^j, where (2^k,2^j) is the least pair of distinct positive powers of 2 for which n divides 2^k-2^j.

%I #5 Mar 30 2012 18:58:09

%S 2,2,6,4,30,6,14,8,126,30,2046,12,8190,14,30,16,510,126,524286,60,126,

%T 2046,4094,24,2097150,8190,524286,28,536870910,30,62,32,2046,510,8190,

%U 252,137438953470,524286,8190,120,2097150,126,32766,4092,8190

%N 2^k-2^j, where (2^k,2^j) is the least pair of distinct positive powers of 2 for which n divides 2^k-2^j.

%C For a guide to related sequences, see A204892.

%t (See the program at A204987.)

%Y Cf. A204987, A204892, A204990=(1/2)(A204991).

%K nonn

%O 1,1

%A _Clark Kimberling_, Jan 21 2012