A372448-OEIS公司

A372448飞机作为一个简单的表

n个	a（n）
0	1
1	4
2	9
三	19
4	39
5	79
6	160
7	322
8	645
9	1292
10	2585
11	5171
12	10344
13	20689
14	41379
15	82759
16	165520
17	331043
18	662087
19	1324175
20	2648352
21	5296705
22	10593412
23	21186825
24	42373651
25	84747303
26	169494607
27	338989215
28	677978433
29	1355956867
30	2711913735
31	5423827471
32	10847654946
33	21695309894
34	43390619790
35	86781239584
36	173562479171
37	347124958343

[1,4,9,19,39,79,160,322,645,1292,2585,5171,10344,20689,41379,82759,165520,331043,662087,1324175,2648352,5296705,10593412,21186825,42373651,84747303,169494607,338989215,677978433,1355956867,2711913735,5423827471,10847654946,21695309894,43390619790,86781239584,173562479171,347124958343]