A172887 - OEIS

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A172887 as a simple table

n	a(n)
1	1
2	135954
3	49244182264431
4	5312943290737316385142992
5	49886018232605740875666730594683213081
6	18430464510875205633785528020178855385292893289980336

[1,135954,49244182264431, 5312943290737316385142992, 49886018232605740875666730594683213081, 18430464510875205633785528020178855385292893289980\ 336]