A157728 - OEIS

A157728 as a simple table

n	a(n)
5	1
6	4
7	9
8	17
9	30
10	51
11	85
12	140
13	229
14	373
15	606
16	983
17	1593
18	2580
19	4177
20	6761
21	10942
22	17707
23	28653
24	46364
25	75021
26	121389
27	196414
28	317807
29	514225
30	832036
31	1346265
32	2178305
33	3524574
34	5702883
35	9227461
36	14930348
37	24157813
38	39088165
39	63245982
40	102334151

[1,4,9,17,30,51,85,140,229,373,606,983,1593,2580, 4177,6761,10942,17707,28653,46364,75021,121389, 196414,317807,514225,832036,1346265,2178305, 3524574,5702883,9227461,14930348,24157813, 39088165,63245982,102334151]