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A148020 as a simple table

n a(n)
0 1
1 1
2 2
3 3
4 8
5 17
6 46
7 127
8 375
9 1128
10 3367
11 10920
12 34671
13 112564
14 378464
15 1276401
16 4367446
17 15059481
18 53064595
19 187243903
20 663669380
21 2400056392
22 8678448201
23 31543452428
24 115945737265
25 428333746174
26 1587547930666
27 5915108954182
28 22227724053667
29 83642770868524
30 315723019652527
31 1201396034129496
32 4579065456128057

[1,1,2,3,8,17,46,127,375,1128,3367,10920,34671,
 112564,378464,1276401,4367446,15059481,53064595,
 187243903,663669380,2400056392,8678448201,
 31543452428,115945737265,428333746174,
 1587547930666,5915108954182,22227724053667,
 83642770868524,315723019652527,1201396034129496,
 4579065456128057]

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Last modified May 24 17:47 EDT 2024. Contains 372781 sequences. (Running on oeis4.)