A027340 - OEIS

A027340 as a simple table

n	a(n)
0	1
1	1
2	2
3	3
4	5
5	7
6	10
7	14
8	20
9	27
10	37
11	49
12	66
13	86
14	113
15	146
16	189
17	241
18	308
19	389
20	492
21	616
22	771
23	958
24	1190
25	1468
26	1809
27	2218
28	2716
29	3310
30	4029
31	4884
32	5913
33	7133
34	8592
35	10318
36	12373
37	14795
38	17666
39	21042
40	25028
41	29700
42	35197
43	41624
44	49160
45	57949
46	68220

[1,1,2,3,5,7,10,14,20,27,37,49,66,86,113,146,189, 241,308,389,492,616,771,958,1190,1468,1809,2218, 2716,3310,4029,4884,5913,7133,8592,10318,12373, 14795,17666,21042,25028,29700,35197,41624,49160, 57949,68220]