A210399 - OEIS

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A210399 as a simple table

n	a(n)
1	549
2	29647
3	1596154
4	85979301
5	4631193134
6	249456180709
7	13436785945910
8	723763304576749
9	38985016148233742
10	2099901274580672917
11	113109748262417625254
12	6092579354615210957373
13	328172626696350857253566

[549,29647,1596154,85979301,4631193134, 249456180709,13436785945910,723763304576749, 38985016148233742,2099901274580672917, 113109748262417625254,6092579354615210957373, 328172626696350857253566]