A394747 - OEIS

A394747 as a simple table

n	a(n)
1	15
2	33
3	105
4	177
5	195
6	267
7	273
8	393
9	405
10	483
11	573
12	705
13	747
14	825
15	915
16	933
17	987
18	1017
19	1065
20	1113
21	1167
22	1233
23	1293
24	1323
25	1455
26	1527
27	1563
28	1605
29	1617
30	1827
31	2157
32	2247
33	2337
34	2343
35	2463
36	2535
37	2553
38	2703
39	2715
40	2745
41	2883
42	2913
43	2967
44	3015
45	3255
46	3327
47	3453
48	3495
49	3537
50	3543

[15,33,105,177,195,267,273,393,405,483,573,705, 747,825,915,933,987,1017,1065,1113,1167,1233,1293, 1323,1455,1527,1563,1605,1617,1827,2157,2247,2337, 2343,2463,2535,2553,2703,2715,2745,2883,2913,2967, 3015,3255,3327,3453,3495,3537,3543]