A345326-OEIS公司

A345326飞机作为一个简单的表

n个	a（n）
0	0
1	4
2	14
三	49
4	125
5	296
6	646
7	1304
8	2459
9	4543
10	7882
11	13272
12	21856
13	34934
14	53446
15	82055
16	121322
17	175498
18	251714
19	354810
20	488440
21	676065
22	914834
23	1220629
24	1627770
25	2135954
26	2759889
27	3590609
28	4602572
29	5830588
30	7386200
31	9266652
32	11469407
33	14314939
34	17658240

[0,4,14,49,125,296,646,1304,2459,4543,7882,13272,21856,34934,53446,82055,121322,175498,251714,354810,488440,676065,914834,1220629,1627770,2135954,2759889,3590609,4602572,5830588,7386200,9266652,11469407,14314939,17658240]