|
Search: id:A128091
|
|
| |
| |
|
|
OFFSET
|
1,2
|
|
|
FORMULA
|
Row sums of unsigned triangle A128090 a(n) = (n-1)*A045991(n) + n^2
|
|
EXAMPLE
|
a(4) = 160 = sum of row 4 terms of A128090: (48 + 48 + 48 + 16) = 3*A045991(4) + 4^2; where A045991 = (0, 0, 4, 18, 48, 100,...).
|
|
CROSSREFS
|
Cf. A128077, A128090, A045991.
Adjacent sequences: A128088 A128089 A128090 this_sequence A128092 A128093 A128094
Sequence in context: A075863 A118838 A100648 this_sequence A119950 A055367 A097555
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Gary W. Adamson (qntmpkt(AT)yahoo.com), Feb 14 2007
|
|
|
Search completed in 0.005 seconds
|
