|
| |
|
|
A102418
|
|
Table of coefficients of Product{k=1..n, (1+x^A000120(k))}.
|
|
0
| |
|
|
1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 1, 3, 4, 4, 3, 1, 1, 3, 5, 7, 7, 5, 3, 1, 1, 3, 6, 10, 12, 12, 10, 6, 3, 1, 1, 3, 6, 11, 15, 18, 20, 18, 15, 11, 6, 3, 1, 1, 4, 9, 17, 26, 33, 38, 38, 33, 26, 17, 9, 4, 1, 1, 4, 10, 21, 35, 50, 64, 71, 71, 64, 50, 35, 21, 10, 4, 1, 1, 4, 11, 25, 45, 71, 99, 121, 135, 135, 121, 99, 71, 45, 25, 11, 4, 1
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,5
|
|
|
COMMENTS
| Also table of coefficients of Product{k=0..n, (1+x^A000120(k))}/2. Row sums are 2^n. Row n has 1+A000788(n) elements.
|
|
|
EXAMPLE
| Rows begin
{1},{1,1},{1,2,1},{1,2,2,2,1},{1,3,4,4,3,1}, {1,3,5,7,7,5,3,1}...
|
|
|
CROSSREFS
| Sequence in context: A110535 A033941 A053256 * A106032 A003646 A201503
Adjacent sequences: A102415 A102416 A102417 * A102419 A102420 A102421
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Jan 08 2005
|
| |
|
|
