|
Search: id:A108457
|
|
|
| A108457 |
|
Number of partitions of (n,n) into pairs (i,j) with i>0, j>=0. |
|
+0
3
|
|
| 1, 1, 3, 8, 23, 60, 161, 404, 1011, 2440, 5804, 13462, 30798, 69082, 152862, 333094, 716781, 1522534, 3198011, 6642274, 13657417, 27805917, 56097811, 112183092, 222496203, 437787036, 854936195, 1657526884, 3191478236, 6104379829
(list; graph; listen)
|
|
|
OFFSET
|
0,3
|
|
|
COMMENT
|
(a,b)+(x,y)=(a+x,b+y); unit is (0,0).
|
|
EXAMPLE
|
(2,2)=(1,2)+(1,0)=(1,1)+(1,1), so a(2)=3.
|
|
CROSSREFS
|
Main diagonal of A108456. Cf. A000041, A108461.
Adjacent sequences: A108454 A108455 A108456 this_sequence A108458 A108459 A108460
Sequence in context: A027212 A027236 A027244 this_sequence A071618 A103819 A017929
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Christian G. Bower (bowerc(AT)usa.net), Jun 03 2005
|
|
|
Search completed in 0.002 seconds
|
