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A153999 formatted as a simple table:

n a(n)
0 1
1 2
2 2
3 4
4 8
5 15
6 30
7 113
8 226
9 897
10 3372
11 13821
12 54535
13 410690
14 1677109
15 13057708
16 99242206
17 798041029
18 6266181287
19 94041421473
20 762970233334
21 11832424270090
22 179170668019138
23 2871889457030716
24 44959471542344339
25 1344474186700872579

[1,2,2,4,8,15,30,113,226,897,3372,13821,54535,
 410690,1677109,13057708,99242206,798041029,
 6266181287,94041421473,762970233334,
 11832424270090,179170668019138,2871889457030716,
 44959471542344339,1344474186700872579]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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