Search: id:A134540 Results 1-1 of 1 results found. %I A134540 %S A134540 1,0,1,0,1,1,0,0,1,1,0,1,1,1,1,0,1,0,1,1,1,0,1,1,1,1,1,1,0,0,0,0,1,1,1, %T A134540 1,0,0,0,1,1,1,1,1,1,0,1,0,0,0,1,1,1,1,1 %V A134540 1,0,1,0,1,1,0,0,1,1,0,1,1,1,1,0,-1,0,1,1,1,0,1,1,1,1,1,1,0,0,0,0,1,1, 1,1,0,0,0,1,1,1, %W A134540 1,1,1,0,-1,0,0,0,1,1,1,1,1 %N A134540 A054525 * A000012. %C A134540 Row sums = phi(n), A000010: (1, 1, 2, 2, 4, 2, 6, 4, 6, 4,...). %F A134540 A054525 * A000012 as infinite lower triangular matrices. Triangle read by rows, partial sums of A054525 (the Mobius transform) terms starting from the right. %e A134540 First few rows of the triangle are: %e A134540 1; %e A134540 0, 1; %e A134540 0, 1, 1; %e A134540 0, 0, 1, 1; %e A134540 0, 1, 1, 1, 1; %e A134540 0, -1, 0, 1, 1, 1; %e A134540 0, 1, 1, 1, 1, 1, 1; %e A134540 0, 0, 0, 0, 1, 1, 1, 1; %e A134540 0, 0, 0, 1, 1, 1, 1, 1, 1; %e A134540 0, -1, 0, 0, 0, 1, 1, 1, 1, 1; %e A134540 ... %Y A134540 Cf. A054525. %Y A134540 Sequence in context: A101688 A155031 A155029 this_sequence A128430 A113704 A131670 %Y A134540 Adjacent sequences: A134537 A134538 A134539 this_sequence A134541 A134542 A134543 %K A134540 tabl,sign %O A134540 1,1 %A A134540 Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 31 2007 Search completed in 0.001 seconds