A144835 - OEIS

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A144835 as a simple table

n	a(n)
1	2
2	10
3	127
4	18838
5	522338493
6	727608914652776081
7	990935377560451600699026552443764271
8	1223212384013602554473872691328685513734082755736750146553750539914774364

[2,10,127,18838,522338493,727608914652776081, 990935377560451600699026552443764271, 12232123840136025544738726913286855137340827557367\ 50146553750539914774364]