A211186 - OEIS

A211186 as a simple table

n	a(n)
1	1
2	2
3	4
4	7
5	44
6	47
7	48
8	49
9	74
10	77
11	78
12	79
13	84
14	87
15	88
16	89
17	94
18	97
19	98
20	99
21	444
22	447
23	448
24	449
25	474
26	477
27	478
28	479
29	484
30	487
31	488
32	489
33	494
34	497
35	498
36	499
37	744
38	747
39	748
40	749
41	774
42	777
43	778
44	779
45	784
46	787
47	788
48	789
49	794
50	797
51	798
52	799
53	844
54	847
55	848
56	849
57	874
58	877

[1,2,4,7,44,47,48,49,74,77,78,79,84,87,88,89,94, 97,98,99,444,447,448,449,474,477,478,479,484,487, 488,489,494,497,498,499,744,747,748,749,774,777, 778,779,784,787,788,789,794,797,798,799,844,847, 848,849,874,877]

n	a(n)
1	1
2	2
3	4
4	7
5	44
6	47
7	48
8	49
9	74
10	77
11	78
12	79
13	84
14	87
15	88
16	89
17	94
18	97
19	98
20	99
21	444
22	447
23	448
24	449
25	474
26	477
27	478
28	479
29	484
30	487
31	488
32	489
33	494
34	497
35	498
36	499
37	744
38	747
39	748
40	749
41	774
42	777
43	778
44	779
45	784
46	787
47	788
48	789
49	794
50	797
51	798
52	799
53	844
54	847
55	848
56	849
57	874
58	877

n	a(n)
1	1
2	2
3	4
4	7
5	44
6	47
7	48
8	49
9	74
10	77
11	78
12	79
13	84
14	87
15	88
16	89
17	94
18	97
19	98
20	99
21	444
22	447
23	448
24	449
25	474
26	477
27	478
28	479
29	484
30	487
31	488
32	489
33	494
34	497
35	498
36	499
37	744
38	747
39	748
40	749
41	774
42	777
43	778
44	779
45	784
46	787
47	788
48	789
49	794
50	797
51	798
52	799
53	844
54	847
55	848
56	849
57	874
58	877

n	a(n)
1	1
2	2
3	4
4	7
5	44
6	47
7	48
8	49
9	74
10	77
11	78
12	79
13	84
14	87
15	88
16	89
17	94
18	97
19	98
20	99
21	444
22	447
23	448
24	449
25	474
26	477
27	478
28	479
29	484
30	487
31	488
32	489
33	494
34	497
35	498
36	499
37	744
38	747
39	748
40	749
41	774
42	777
43	778
44	779
45	784
46	787
47	788
48	789
49	794
50	797
51	798
52	799
53	844
54	847
55	848
56	849
57	874
58	877