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A105253 formatted as a simple table:

n a(n)
0 1
1 77
2 1848
3 24024
4 210210
5 1387386
6 7399392
7 33372768
8 131405274
9 462351890
10 1479526048
11 4365213216
12 12004336344
13 31040798712
14 76018282560
15 177375992640
16 396324483555
17 851617661895
18 1766318113560
19 3547314771000
20 6917263803450

[1,77,1848,24024,210210,1387386,7399392,33372768,
 131405274,462351890,1479526048,4365213216,
 12004336344,31040798712,76018282560,177375992640,
 396324483555,851617661895,1766318113560,
 3547314771000,6917263803450]

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


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