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A005191 formatted as a simple table:

n a(n)
0 1
1 1
2 5
3 19
4 85
5 381
6 1751
7 8135
8 38165
9 180325
10 856945
11 4091495
12 19611175
13 94309099
14 454805755
15 2198649549
16 10651488789
17 51698642405
18 251345549849
19 1223798004815
20 5966636799745
21 29125608152345
22 142330448514875
23 696235630761115

[1,1,5,19,85,381,1751,8135,38165,180325,856945,
 4091495,19611175,94309099,454805755,2198649549,
 10651488789,51698642405,251345549849,
 1223798004815,5966636799745,29125608152345,
 142330448514875,696235630761115]

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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