|
| |
|
|
A158817
|
|
a(n) = (Binomial(2^n,2^{n-1})-Binomial(2^{n-1},2^{n-2})/2^n
|
|
0
| |
|
|
1, 8, 800, 18783360, 28634752192836096, 187118328452563147377366903401859072, 22533823529098462258163079522899558155141642796614195116180863201125539840
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 2,2
|
|
|
REFERENCES
| Katona, Gyula O. H.; Makar-Limanov, Leonid A problem for abelian groups. Asian-Eur. J. Math. 1 (2008), no. 2, 237--241. (Reviewer: Thomas Britz) 20K01 (05B40 94B65)
|
|
|
MATHEMATICA
| Flatten[Table[(Binomial[2^n, 2^{n - 1}] - Binomial[2^{n - 1}, 2^{n - 2}])/ 2^n, {n, 2, 10}]]
|
|
|
CROSSREFS
| Sequence in context: A001547 A168310 A054945 * A159707 A097818 A175411
Adjacent sequences: A158814 A158815 A158816 * A158818 A158819 A158820
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Tanya Khovanova & Leonid Makar-Limanov (tanyakh(AT)yahoo.com), Mar 27 2009
|
| |
|
|
