|
| |
| |
|
|
|
1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 7, 4, 1, 1, 1, 10, 7, 7, 1, 1, 1, 13, 10, 16, 7, 1, 1, 1, 16, 13, 28, 16, 10, 1, 1, 1, 19, 16, 43, 28, 28, 10, 1, 1, 1, 22, 19, 61, 43, 58, 28, 13, 1, 1, 1, 25, 22, 82, 61, 103, 58, 43, 13, 1, 1, 1, 28, 25, 106, 82, 166
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,9
|
|
|
COMMENTS
| Row sums = A131300: (1, 2, 3, 7, 14, 27, 49, 86,...). Reversed row triangle = A131301.
|
|
|
LINKS
| Nathaniel Johnston, Rows 0..100, flattened
|
|
|
FORMULA
| 3*A065941 - 2*A000012 as infinite lower triangular matrices.
|
|
|
EXAMPLE
| First few rows of the triangle are:
1;
1, 1;
1, 1, 1;
1, 1, 4, 1;
1, 1, 7, 4, 1;
1, 1, 10, 7, 7, 1;
1, 1, 13, 10, 16, 7, 1;
...
|
|
|
MAPLE
| seq(seq(3*binomial(n-floor((k+1)/2), floor(k/2))-2, k=0..n), n=0..15); # Nathaniel Johnston, Jun 30 2011
|
|
|
CROSSREFS
| Cf. A065941, A000012, A131300, A131301.
Sequence in context: A162400 A179054 A063928 * A073937 A074058 A088440
Adjacent sequences: A131296 A131297 A131298 * A131300 A131301 A131302
|
|
|
KEYWORD
| nonn,tabl,easy
|
|
|
AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 27 2007
|
| |
|
|
