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A281061 as a simple table

n a(n)
1 0
2 468
3 4988
4 10112
5 22106
6 46610
7 87995
8 159317
9 282552
10 495655
11 864369
12 1501627
13 2601791
14 4498333
15 7762266
16 13369326
17 22983871
18 39440039
19 67556367
20 115513187
21 197179026
22 336035590
23 571793109
24 971529387
25 1648428839
26 2793279473

[0,468,4988,10112,22106,46610,87995,159317,282552,
 495655,864369,1501627,2601791,4498333,7762266,
 13369326,22983871,39440039,67556367,115513187,
 197179026,336035590,571793109,971529387,
 1648428839,2793279473]

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Last modified December 2 14:48 EST 2021. Contains 349445 sequences. (Running on oeis4.)