|
Search: id:A085812
|
|
|
| A085812 |
|
Sum(sum(binomial(i,j),i=n..2*n),j=0..n). |
|
+0
1
|
|
| 1, 5, 22, 91, 366, 1454, 5748, 22691, 89590, 354010, 1400268, 5544334, 21973420, 87158972, 345977832, 1374249251, 5461704870, 21717305762, 86391846492, 343800647066, 1368639516420, 5450093895812, 21708897213912, 86492537630606
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
EXAMPLE
|
a(1)=binomial(1,0)+binomial(2,0)+binomial(1,1)+binomial(2,1)=1+1+1+2=5
|
|
MAPLE
|
a := n->add(add(binomial(i, j), i=n..2*n), j=0..n); seq(a(n), n=0..25);
|
|
CROSSREFS
|
Sequence in context: A128566 A097138 A050185 this_sequence A053297 A071715 A010036
Adjacent sequences: A085809 A085810 A085811 this_sequence A085813 A085814 A085815
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Jul 25 2003
|
|
|
Search completed in 0.002 seconds
|
