A076972 - OEIS

A076972 as a simple table

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	10
7	15
8	21
9	30
10	43
11	61
12	87
13	123
14	174
15	247
16	349
17	494
18	699
19	989
20	1399
21	1979
22	2799
23	3959
24	5599
25	7919
26	11199
27	15838
28	22399
29	31677
30	44799
31	63355
32	89598
33	126711
34	179197
35	253423
36	358395
37	506847
38	716790
39	1013695
40	1433581
41	2027390
42	2867163

[1,2,3,5,7,10,15,21,30,43,61,87,123,174,247,349, 494,699,989,1399,1979,2799,3959,5599,7919,11199, 15838,22399,31677,44799,63355,89598,126711,179197, 253423,358395,506847,716790,1013695,1433581, 2027390,2867163]