A375980 - OEIS

A375980 as a simple table

n	a(n)
0	1
1	2
2	3
3	4
4	6
5	9
6	12
7	17
8	25
9	35
10	49
11	71
12	101
13	142
14	203
15	290
16	410
17	583
18	832
19	1181
20	1677
21	2389
22	3397
23	4825
24	6865
25	9766
26	13879
27	19736
28	28074
29	39913
30	56748
31	80709
32	114765
33	163175
34	232045
35	329975
36	469189
37	667178
38	948743
39	1349062
40	1918310
41	2727839
42	3878912
43	5515657

[1,2,3,4,6,9,12,17,25,35,49,71,101,142,203,290, 410,583,832,1181,1677,2389,3397,4825,6865,9766, 13879,19736,28074,39913,56748,80709,114765,163175, 232045,329975,469189,667178,948743,1349062, 1918310,2727839,3878912,5515657]