A031187 - OEIS

A031187 as a simple table

n	a(n)
1	0
2	1
3	10
4	100
5	145
6	154
7	247
8	274
9	415
10	427
11	451
12	472
13	514
14	541
15	724
16	742
17	888
18	1000
19	1045
20	1054
21	1145
22	1154
23	1405
24	1415
25	1450
26	1451
27	1504
28	1514
29	1540
30	1541
31	2047
32	2074
33	2407
34	2470
35	2704
36	2740
37	3489
38	3498
39	3849
40	3894
41	3948
42	3984
43	4015
44	4027

[0,1,10,100,145,154,247,274,415,427,451,472,514, 541,724,742,888,1000,1045,1054,1145,1154,1405, 1415,1450,1451,1504,1514,1540,1541,2047,2074,2407, 2470,2704,2740,3489,3498,3849,3894,3948,3984,4015, 4027]