A067984-出口

A067984号作为一个简单的表

n个	a（n）
0	18
1	83
2	206
三	459
4	940
5	1844
6	3504
7	6513
8	11902
9	21465
10	38302
11	67752
12	118974
13	207631
14	360430
15	622791
16	1071776
17	1837852
18	3141468
19	5354445
20	9102878
21	15439413
22	26131346
23	44141904
24	74433450
25	125306699

[18,83,206,459,940,1844,3504,6513,11902,21465,38302,67752,118974,207631,360430,622791,1071776,1837852,3141468,5354445,9102878,15439413,26131346,44141904,74433450,125306699]