A102478 - OEIS

A102478 as a simple table

n	a(n)
1	21
2	39
3	51
4	54
5	90
6	96
7	135
8	150
9	156
10	165
11	171
12	195
13	210
14	261
15	270
16	306
17	330
18	411
19	420
20	441
21	501
22	570
23	615
24	636
25	741
26	771
27	816
28	885
29	1050
30	1095
31	1341
32	1371
33	1536
34	1599
35	1704
36	1821
37	1914
38	2121
39	2226
40	2286
41	2370
42	2394
43	2499
44	2811
45	2859
46	2916
47	3051
48	3129
49	3714

[21,39,51,54,90,96,135,150,156,165,171,195,210, 261,270,306,330,411,420,441,501,570,615,636,741, 771,816,885,1050,1095,1341,1371,1536,1599,1704, 1821,1914,2121,2226,2286,2370,2394,2499,2811,2859, 2916,3051,3129,3714]