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A005584 as a simple table

n a(n)
1 2
2 13
3 49
4 140
5 336
6 714
7 1386
8 2508
9 4290
10 7007
11 11011
12 16744
13 24752
14 35700
15 50388
16 69768
17 94962
18 127281
19 168245
20 219604
21 283360
22 361790
23 457470
24 573300
25 712530
26 878787
27 1076103
28 1308944
29 1582240
30 1901416

[2,13,49,140,336,714,1386,2508,4290,7007,11011,
 16744,24752,35700,50388,69768,94962,127281,168245,
 219604,283360,361790,457470,573300,712530,878787,
 1076103,1308944,1582240,1901416]

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Last modified March 22 12:46 EDT 2019. Contains 321421 sequences. (Running on oeis4.)