|
Search: id:A130212
|
|
| |
|
| 1, 2, 1, 3, 1, 2, 4, 2, 2, 2, 5, 2, 2, 2, 4, 5, 3, 4, 2, 4, 2, 7, 3, 4, 2, 4, 2, 6, 8, 4, 4, 4, 4, 2, 6, 4, 9, 4, 6, 4, 4, 2, 6, 4, 6, 10, 5, 6, 4, 8, 2, 6, 4, 6, 4
(list; table; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
Row sums = the triangular series, A000217: (1, 3, 6, 10, 15,...). Right border = A000010, phi(n): (1, 1, 2, 2, 4, 2, 6,...). A130211 = A054522 * A000012
|
|
FORMULA
|
A000012 * A054522 as infinite lower triangular matrices.
|
|
EXAMPLE
|
First few rows of the triangle are:
1;
2, 1;
3, 1, 2;
4, 2, 2, 2;
5, 2, 2, 2, 4;
6, 3, 4, 2, 4, 2;
7, 3, 4, 2, 4, 2, 6;
8, 4, 4, 4, 4, 2, 6, 4;
9, 4, 6, 4, 4, 2, 6, 4, 6;
10, 5, 6, 4, 8, 2, 6, 4, 6, 4;
...
|
|
CROSSREFS
|
Cf. A000010, A130211, A054522, A000217.
Adjacent sequences: A130209 A130210 A130211 this_sequence A130213 A130214 A130215
Sequence in context: A087295 A130517 A056951 this_sequence A133737 A125047 A045898
|
|
KEYWORD
|
nonn,tabl
|
|
AUTHOR
|
Gary W. Adamson (qntmpkt(AT)yahoo.com), May 17 2007
|
|
|
Search completed in 0.002 seconds
|
