|
| |
|
|
A132109
|
|
Row sums of triangle A132108.
|
|
1
| |
|
|
1, 3, 7, 14, 26, 47, 85, 156, 292, 557, 1079, 2114, 4174, 8283, 16489, 32888, 65672, 131225, 262315, 524478, 1048786, 2097383, 4194557, 8388884, 16777516, 33554757, 67109215, 134218106, 268435862, 536871347, 1073742289, 2147484144
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
FORMULA
| Binomial transform of [1, 2, 2, 1, 1, 1,...].
|
|
|
EXAMPLE
| a(3) = 14 = sum of row 3 terms of triangle A132108: (4 + 5 + 4 + 1).
a(3) = 14 = (1, 3, 3, 1) dot (1, 2, 2, 1) = (1 + 6 + 6 + 1).
|
|
|
MATHEMATICA
| Table[2^n+n^2-n, {n, 1, 4!}]/2 [From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 07 2010]
|
|
|
CROSSREFS
| Cf. A132108.
Sequence in context: A001924 A079921 A014168 * A099854 A054355 A117071
Adjacent sequences: A132106 A132107 A132108 * A132110 A132111 A132112
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 09 2007
|
|
|
EXTENSIONS
| More terms from Vladimir Orlovsky (4vladimir(AT)gmail.com), May 07 2010
|
| |
|
|