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A263587 as a simple table

n a(n)
1 1
2 6
3 12
4 31
5 89
6 230
7 536
8 1171
9 2439
10 4882
11 9470
12 17935
13 33331
14 60994
15 110208
16 197059
17 349285
18 614522
19 1074316
20 1867855
21 3232059
22 5569206
23 9560842
24 16359331
25 27909479
26 47487870
27 80606196
28 136522471
29 230766449
30 389355662
31 655827200

[1,6,12,31,89,230,536,1171,2439,4882,9470,17935,
 33331,60994,110208,197059,349285,614522,1074316,
 1867855,3232059,5569206,9560842,16359331,27909479,
 47487870,80606196,136522471,230766449,389355662,
 655827200]

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Last modified January 26 22:13 EST 2023. Contains 359836 sequences. (Running on oeis4.)