A173921 - OEIS

%I #3 Mar 30 2012 18:51:05

%S 0,1,1,4,2,5,6,12,4,7,9,14,12,19,21,32,8,11,17,22,19,27,30,40,24,35,

%T 37,52,41,57,60,80,16,19,33,38,34,41,51,60,40,51,57,70,64,81,85,104,

%U 48,67,69,92,76,99,101,128,84,111,113,144,118,151,155,192,32,35,65,70,66,73

%N Sums of rows of the triangle in A173920.

%C a(n) = SUM(A173920(n,k): 0<=k<=n);

%C a(A000225(n)) = A001787(n);

%C a(A000079(n)) = A011782(n);

%C a(A000051(n)) = A062709(n) for n>0;

%C A000120(n)<=a(n)<=A000788(n); a(n)=A000788(n) iff n=2^k-1.

%H R. Zumkeller, <a href="/A173921/b173921.txt">Table of n, a(n) for n = 0..320</a>

%Y Cf. A000225, A001787.

%K nonn

%O 0,4

%A _Reinhard Zumkeller_, Mar 04 2010