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A053142 formatted as a simple table:

n a(n)
0 0
1 1
2 7
3 42
4 246
5 1435
6 8365
7 48756
8 284172
9 1656277
10 9653491
11 56264670
12 327934530
13 1911342511
14 11140120537
15 64929380712
16 378436163736
17 2205687601705
18 12855689446495
19 74928449077266
20 436715005017102

[0,1,7,42,246,1435,8365,48756,284172,1656277,
 9653491,56264670,327934530,1911342511,11140120537,
 64929380712,378436163736,2205687601705,
 12855689446495,74928449077266,436715005017102]

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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