|
| |
| |
|
|
|
1, 1, 2, 4, 2, 3, 4, 6, 3, 4, 9, 6, 8, 4, 5, 9, 12, 8, 10, 5, 6, 16, 12, 15, 10, 12, 6, 7, 16, 20, 15, 18, 12, 14, 7, 8, 25, 20, 24, 18, 21, 14, 16, 8, 9, 25, 30, 24, 28, 21, 24, 16, 18, 9, 10
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,3
|
|
|
COMMENTS
|
Row sums = A049778: (1, 3, 9, 17, 32, 50, 78,...).
|
|
|
LINKS
|
Table of n, a(n) for n=1..55.
|
|
|
FORMULA
|
A002260 * A128174 as infinite lower triangular matrices.
|
|
|
EXAMPLE
|
First few rows of the triangle are:
1;
1, 2;
4, 2, 3;
4, 6, 3, 4;
9, 6, 8, 4, 5;
9, 12, 8, 10, 5, 6;
16, 12, 15, 10, 12, 6, 7;
...
|
|
|
CROSSREFS
|
Cf. A128174, A002260, A049778.
Sequence in context: A054240 A182817 A082864 * A093056 A151849 A141387
Adjacent sequences: A134444 A134445 A134446 * A134448 A134449 A134450
|
|
|
KEYWORD
|
nonn,tabl
|
|
|
AUTHOR
|
Gary W. Adamson, Oct 25 2007
|
|
|
STATUS
|
approved
|
| |
|
|
