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A248957 as a simple table

n a(n)
0 0
1 1
2 4
3 14
4 48
5 161
6 546
7 1869
8 6488
9 22903
10 81853
11 295638
12 1077307
13 3956781
14 14628943
15 54396516
16 203273679
17 762926860
18 2874375515
19 10866222782
20 41203006771
21 156660878622
22 597116085785
23 2280998189786
24 8731187785599
25 33483377539718
26 128625499652666

[0,1,4,14,48,161,546,1869,6488,22903,81853,295638,
 1077307,3956781,14628943,54396516,203273679,
 762926860,2874375515,10866222782,41203006771,
 156660878622,597116085785,2280998189786,
 8731187785599,33483377539718,128625499652666]

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)