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A291234 as a simple table

n a(n)
0 1
1 2
2 5
3 12
4 28
5 67
6 156
7 370
8 866
9 2044
10 4799
11 11304
12 26574
13 62547
14 147108
15 346149
16 814270
17 1915795
18 4506952
19 10603417
20 24945414
21 58687660
22 138068915
23 324824928
24 764187814
25 1797846170
26 4229645000
27 9950753025
28 23410332344
29 55075627972
30 129572006209

[1,2,5,12,28,67,156,370,866,2044,4799,11304,26574,
 62547,147108,346149,814270,1915795,4506952,
 10603417,24945414,58687660,138068915,324824928,
 764187814,1797846170,4229645000,9950753025,
 23410332344,55075627972,129572006209]

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Last modified October 21 06:18 EDT 2019. Contains 328292 sequences. (Running on oeis4.)