A084328 - OEIS

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A084328 as a simple table

n	a(n)
0	0
1	1
2	13
3	158
4	1911
5	23105
6	279344
7	3377317
8	40832337
9	493669894
10	5968552915
11	72160819061
12	872436565728
13	10547906344793
14	127525980259301
15	1541810773578190
16	18640754273664159
17	225369887048273977

[0,1,13,158,1911,23105,279344,3377317,40832337, 493669894,5968552915,72160819061,872436565728, 10547906344793,127525980259301,1541810773578190, 18640754273664159,225369887048273977]