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A002894 formatted as a simple table:

n a(n)
0 1
1 4
2 36
3 400
4 4900
5 63504
6 853776
7 11778624
8 165636900
9 2363904400
10 34134779536
11 497634306624
12 7312459672336
13 108172480360000
14 1609341595560000
15 24061445010950400
16 361297635242552100

[1,4,36,400,4900,63504,853776,11778624,165636900,
 2363904400,34134779536,497634306624,7312459672336,
 108172480360000,1609341595560000,
 24061445010950400,361297635242552100]

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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