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A042437 formatted as a simple table:

n a(n)
0 1
1 3
2 16
3 115
4 131
5 246
6 377
7 623
8 1000
9 1623
10 12361
11 63428
12 202645
13 11006258
14 33221419
15 177113353
16 1273014890
17 1450128243
18 2723143133
19 4173271376
20 6896414509
21 11069685885
22 17966100394
23 136832388643

[1,3,16,115,131,246,377,623,1000,1623,12361,63428,
 202645,11006258,33221419,177113353,1273014890,
 1450128243,2723143133,4173271376,6896414509,
 11069685885,17966100394,136832388643]

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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