A259798 - OEIS

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A259798 as a simple table

n	a(n)
1	11
2	43
3	258
4	1886
5	15772
6	140549
7	1311749
8	12648913
9	124896943
10	1255339471
11	12791342074
12	131747261218
13	1368576060800
14	14314677403795

[11,43,258,1886,15772,140549,1311749,12648913, 124896943,1255339471,12791342074,131747261218, 1368576060800,14314677403795]