A181970 - OEIS

A181970 as a simple table

n	a(n)
1	3
2	6
3	9
4	13
5	20
6	28
7	37
8	47
9	63
10	71
11	83
12	111
13	127
14	160
15	177
16	235
17	280
18	301
19	348
20	377
21	430
22	509
23	542
24	633
25	700
26	731
27	838
28	875
29	915
30	1030
31	1194
32	1284
33	1327
34	1415
35	1458
36	1559
37	1752
38	1915
39	2015
40	2181
41	2231
42	2531
43	2590
44	2773
45	2960
46	3089
47	3154
48	3289
49	3485
50	3562
51	3919
52	3997
53	4142

[3,6,9,13,20,28,37,47,63,71,83,111,127,160,177, 235,280,301,348,377,430,509,542,633,700,731,838, 875,915,1030,1194,1284,1327,1415,1458,1559,1752, 1915,2015,2181,2231,2531,2590,2773,2960,3089,3154, 3289,3485,3562,3919,3997,4142]