%I A051486
%S A051486 1,1,1,2,1,1,2,2,2,1,1,2,1,2,4,2,1,2,1,1,2,1,0,2,4,3,2,2,2,3,4,2,0,
%T A051486 1,2,1,1,2,1,0,0,2,4,2,0,0,3,6,3,0,0,4,8,4,0,0,3,6,3,0,0,2,4,2,0,0,
%U A051486 1,2,1,1,2,1,0,0,0,2,4,2,0,0,0,1,2,1,2,4,2,0,0,1,6,9,4,0,0,2,6,6,2
%N A051486 Triangle T(n,k) = number of symmetric Boolean functions of n variables 
               and rank from 0 to 2^n.
%H A051486 <a href="Sindx_Bo.html#Boolean">Index entries for sequences related to 
               Boolean functions</a>
%e A051486 [1, 1], [1, 2, 1], [1, 2, 2, 2, 1], [1, 2, 1, 2, 4, 2, 1, 2, 1], ...
%Y A051486 Row sums give A011782.
%Y A051486 Sequence in context: A029256 A109073 A026465 this_sequence A081355 A060778 
               A096492
%Y A051486 Adjacent sequences: A051483 A051484 A051485 this_sequence A051487 A051488 
               A051489
%K A051486 nonn,tabf,nice
%O A051486 0,4
%A A051486 Vladeta Jovovic (vladeta(AT)eunet.rs)