|
Search: id:A135152
|
|
| |
|
| 1, 2, 1, 4, 2, 1, 4, 4, 2, 1, 6, 4, 4, 2, 1, 6, 6, 4, 4, 2, 1, 8, 6, 6, 4, 4, 2, 1, 8, 8, 6, 6, 4, 4, 2, 1, 10, 8, 8, 6, 6, 4, 4, 2, 1, 10, 10, 8, 8, 6, 6, 4, 4, 2, 1
(list; table; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
Row sums = A047838: (1, 3, 7, 11, 17, 23, 31, 39,...). The triangle is a companion to A135151.
|
|
FORMULA
|
A004736 + A128174 - I, where I = Identity matrix, A004736 = (1; 2,1; 3,2,1;...) and A128174 = (1; 0,1; 1,0,1; 0,1,0,1;...).
|
|
EXAMPLE
|
First few rows of the triangle are:
1;
2, 1;
4, 2, 1;
4, 4, 2, 1;
6, 4, 4, 2, 1;
6, 6, 4, 4, 2, 1;
8, 6, 6, 4, 4, 2, 1;
...
|
|
CROSSREFS
|
Cf. A135151, A047838, A004736, A128174.
Sequence in context: A006839 A118235 A083653 this_sequence A147542 A128177 A087738
Adjacent sequences: A135149 A135150 A135151 this_sequence A135153 A135154 A135155
|
|
KEYWORD
|
nonn,tabl
|
|
AUTHOR
|
Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 21 2007
|
|
|
Search completed in 0.002 seconds
|
