A251389 - OEIS

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A251389 as a simple table

n	a(n)
1	19077905
2	61210372853
3	195833921630923
4	627040122137369465
5	2007727783867224687619
6	6428619222646214779210647
7	20584044969991357548445765971
8	65908857071343270914359258934351

[19077905,61210372853,195833921630923, 627040122137369465,2007727783867224687619, 6428619222646214779210647, 20584044969991357548445765971, 65908857071343270914359258934351]