

A181101


Triangle T(n,k) read by rows. T(1,1)=1, n>1: If n/k=A020639(n) then 1 else 0.


1



1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

Let A=T(n,k)*T(n,k), B=A*A, C=B*B, D=C*C, and so on. Then the first column in the last matrix (D) converges to the Liouville function.


LINKS

Table of n, a(n) for n=1..105.


EXAMPLE

Triangle starts:
1,
1,0,
1,0,0,
0,1,0,0,
1,0,0,0,0,
0,0,1,0,0,0,
1,0,0,0,0,0,0,
0,0,0,1,0,0,0,0,
0,0,1,0,0,0,0,0,0,
0,0,0,0,1,0,0,0,0,0,
1,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,1,0,0,0,0,0,0,


CROSSREFS

Cf. A020639, A008836.
Sequence in context: A058840 A154269 A036987 * A214509 A053866 A143259
Adjacent sequences: A181098 A181099 A181100 * A181102 A181103 A181104


KEYWORD

sign,tabl


AUTHOR

Mats Granvik, Oct 03 2010


STATUS

approved



