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A060790 formatted as a simple table:

n a(n)
0 -1
1 2
2 2
3 3
4 15
5 38
6 110
7 323
8 927
9 2682
10 7754
11 22403
12 64751
13 187134
14 540822
15 1563011
16 4517183
17 13054898
18 37729362
19 109039875
20 315131087
21 910745750
22 2632104062
23 7606921923
24 21984412383
25 63536130986
26 183622826522
27 530679817859

[-1,2,2,3,15,38,110,323,927,2682,7754,22403,64751,
 187134,540822,1563011,4517183,13054898,37729362,
 109039875,315131087,910745750,2632104062,
 7606921923,21984412383,63536130986,183622826522,
 530679817859]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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