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A231800 as a simple table

n a(n)
1 13
2 61
3 252
4 1120
5 5294
6 23965
7 107961
8 492274
9 2241508
10 10179136
11 46266937
12 210403361
13 956500632
14 4348045862
15 19767246606
16 89865920745
17 408539020529
18 1857270275036
19 8443425178952
20 38384952010304
21 174503080660617

[13,61,252,1120,5294,23965,107961,492274,2241508,
 10179136,46266937,210403361,956500632,4348045862,
 19767246606,89865920745,408539020529,
 1857270275036,8443425178952,38384952010304,
 174503080660617]

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Last modified May 10 16:51 EDT 2024. Contains 372387 sequences. (Running on oeis4.)