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A227266 as a simple table

n a(n)
1 4
2 16
3 49
4 132
5 341
6 836
7 1934
8 4232
9 8804
10 17501
11 33392
12 61393
13 109141
14 188181
15 315546
16 515823
17 823812
18 1287900
19 1974288
20 2972226
21 4400429
22 6414866
23 9218134
24 13070650
25 18303916
26 25336135
27 34690480
28 47016343
29 63113917
30 83962491

[4,16,49,132,341,836,1934,4232,8804,17501,33392,
 61393,109141,188181,315546,515823,823812,1287900,
 1974288,2972226,4400429,6414866,9218134,13070650,
 18303916,25336135,34690480,47016343,63113917,
 83962491]

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Last modified August 14 03:14 EDT 2022. Contains 356109 sequences. (Running on oeis4.)