A326740 - cp's OEIS frontend

A326740 Numbers which converge to 7 under repeated application of the powertrain map of A133500.

n	a(n)
1	7
2	71
3	75
4	107
5	117
6	127
7	137
8	147
9	157
10	167
11	177
12	187
13	197
14	207
15	307
16	407
17	507
18	523
19	543
20	607
21	707
22	711
23	723
24	747
25	751
26	807
27	907
28	1071
29	1075
30	1171
31	1175
32	1271
33	1275
34	1371
35	1375
36	1471
37	1475
38	1571
39	1575
40	1671
41	1675
42	1771
43	1775
44	1871
45	1875
46	1971
47	1975
48	2071

[7, 71, 75, 107, 117, 127, 137, 147, 157, 167, 177, 187, 197, 207, 307, 407, 507, 523, 543, 607, 707, 711, 723, 747, 751, 807, 907, 1071, 1075, 1171, 1175, 1271, 1275, 1371, 1375, 1471, 1475, 1571, 1575, 1671, 1675, 1771, 1775, 1871, 1875, 1971, 1975, 2071]

cp's OEIS Frontend

A326740 Numbers which converge to 7 under repeated application of the powertrain map of A133500.

Table of values

List of values