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Numbers n such that A067655(n) is different from A049606(n).
1

%I #3 Apr 30 2014 01:28:35

%S 14,18,23,25,29,35,36,40,41,42,47,51,53,58,61,62,63,69,70,71,73,80,81,

%T 84,86,88,89,90,91,95,96,99,100,102,104,106,107,109,110,113,117,118,

%U 124,127,128,130,132,135,137,139,141,146,147,150,152,155,156,157,161

%N Numbers n such that A067655(n) is different from A049606(n).

%C Or, denominator of 2^n/n! differs from denominator of sum(k=1,n,C(n-1,k-1)*2^k/k!).

%C We conjecture that the sequence is infinite, the sequence and its complement (cases where the two values are equal) equipartition N and the difference between consecutive members of this sequence never exceeds c=7.

%K nonn

%O 1,1

%A _Ralf Stephan_, Aug 11 2004