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A099760 as a simple table

n a(n)
0 1
1 2
2 6
3 26
4 158
5 1266
6 12662
7 151946
8 2127246
9 34035938
10 612646886
11 12252937722
12 269564629886
13 6469551117266
14 168208329048918
15 4709833213369706
16 141294996401091182
17 4521439884834917826
18 153728956084387206086

[1,2,6,26,158,1266,12662,151946,2127246,34035938,
 612646886,12252937722,269564629886,6469551117266,
 168208329048918,4709833213369706,
 141294996401091182,4521439884834917826,
 153728956084387206086]

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Last modified December 7 03:36 EST 2016. Contains 278838 sequences.