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A274547 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 8
5 18
6 40
7 101
8 254
9 723
10 2064
11 6586
12 21143
13 74752
14 266078
15 1029983
16 4013425
17 16843526
18 71136112
19 321150717
20 1458636308
21 7038678613
22 34161890155
23 175261038904
24 904125989974
25 4909033438008
26 26795600521492
27 153376337926066
28 882391616100249

[1,1,2,4,8,18,40,101,254,723,2064,6586,21143,
 74752,266078,1029983,4013425,16843526,71136112,
 321150717,1458636308,7038678613,34161890155,
 175261038904,904125989974,4909033438008,
 26795600521492,153376337926066,882391616100249]

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Last modified March 7 19:49 EST 2021. Contains 341931 sequences. (Running on oeis4.)