A099141 - OEIS

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A099141 as a simple table

n	a(n)
0	1
1	7
2	73
3	847
4	10033
5	119287
6	1419193
7	16886527
8	200931553
9	2390878567
10	28449011113
11	338514191407
12	4027973401873
13	47928772841047
14	570303484727833
15	6786029465163487
16	80746825394092993
17	960804818888214727

[1,7,73,847,10033,119287,1419193,16886527, 200931553,2390878567,28449011113,338514191407, 4027973401873,47928772841047,570303484727833, 6786029465163487,80746825394092993, 960804818888214727]