|
Search: id:A140302
|
|
|
| A140302 |
|
b(n)=A000749(n+1)-2*A000749(n)=0, 0, 1, 2, 2, 0, -4, -8, -8, = 0, A009545 and its three differences by columns on line. |
|
+0
1
|
|
| 0, 0, 1, -1, 0, 1, 0, -1, 1, 1, -1, -1, 2, 0, -2, 0, 2, -2, -2, 2, 0, -4, 0, 4, -4, -4, 4, 4, -8, 0, 8, 0, -8, 8, 8, -8, 0, 16, 0, -16, 16, 16, -16, -16, 32, 0, -32, 0, 32, -32, -32, 32, 0, -64, 0, 64, -64, -64, 64, 64
(list; graph; listen)
|
|
|
OFFSET
|
0,13
|
|
|
COMMENT
|
A009545 is principal sequence of degenerate case a(n)=2a(n-1)-2a(n-2), which means second differences opposite to the sequence, for generally a(n)=4a(n-1)-6a(n-2)+4a(n-3) which here holds without restriction.
|
|
FORMULA
|
Rectangle (vertical sums = 0): 0, 0, 1, 2, 2; 0, 1, 1, 0, -2; 1, 0, -1, -2, -2; -1, -1 -1, 0, 2;
|
|
CROSSREFS
|
Adjacent sequences: A140299 A140300 A140301 this_sequence A140303 A140304 A140305
Sequence in context: A039979 A103668 A076472 this_sequence A085341 A063918 A097974
|
|
KEYWORD
|
sign,uned
|
|
AUTHOR
|
Paul Curtz (bpcrtz(AT)free.fr), May 27 2008
|
|
|
Search completed in 0.002 seconds
|
