A045777 - cp's OEIS frontend

A045777 a(1)=1, a(2)=2; thereafter successive products of pairs of digits make further digits.

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	3
7	2
8	2
9	4
10	6
11	4
12	8
13	2
14	4
15	2
16	4
17	3
18	2
19	1
20	6
21	8
22	8
23	8
24	1
25	2
26	6
27	2
28	6
29	4
30	8
31	6
32	4
33	6
34	4
35	8
36	2
37	1
38	2
39	1
40	2
41	1
42	2
43	2
44	4
45	3
46	2
47	4
48	8
49	2
50	4
51	2
52	4
53	2
54	4
55	3
56	2
57	1
58	6
59	2
60	2
61	2
62	2
63	2
64	2
65	4
66	8
67	1
68	2
69	6
70	8
71	3
72	2
73	1
74	6
75	8
76	8
77	8
78	8
79	8
80	1
81	2
82	6
83	2
84	6
85	1
86	2
87	4
88	4
89	4
90	4
91	4
92	8
93	3
94	2
95	8
96	2
97	1
98	2
99	4
100	8
101	2
102	4
103	6
104	2
105	6

[1, 2, 2, 4, 8, 3, 2, 2, 4, 6, 4, 8, 2, 4, 2, 4, 3, 2, 1, 6, 8, 8, 8, 1, 2, 6, 2, 6, 4, 8, 6, 4, 6, 4, 8, 2, 1, 2, 1, 2, 1, 2, 2, 4, 3, 2, 4, 8, 2, 4, 2, 4, 2, 4, 3, 2, 1, 6, 2, 2, 2, 2, 2, 2, 4, 8, 1, 2, 6, 8, 3, 2, 1, 6, 8, 8, 8, 8, 8, 1, 2, 6, 2, 6, 1, 2, 4, 4, 4, 4, 4, 8, 3, 2, 8, 2, 1, 2, 4, 8, 2, 4, 6, 2, 6]

cp's OEIS Frontend

A045777 a(1)=1, a(2)=2; thereafter successive products of pairs of digits make further digits.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	3
7	2
8	2
9	4
10	6
11	4
12	8
13	2
14	4
15	2
16	4
17	3
18	2
19	1
20	6
21	8
22	8
23	8
24	1
25	2
26	6
27	2
28	6
29	4
30	8
31	6
32	4
33	6
34	4
35	8
36	2
37	1
38	2
39	1
40	2
41	1
42	2
43	2
44	4
45	3
46	2
47	4
48	8
49	2
50	4
51	2
52	4
53	2
54	4
55	3
56	2
57	1
58	6
59	2
60	2
61	2
62	2
63	2
64	2
65	4
66	8
67	1
68	2
69	6
70	8
71	3
72	2
73	1
74	6
75	8
76	8
77	8
78	8
79	8
80	1
81	2
82	6
83	2
84	6
85	1
86	2
87	4
88	4
89	4
90	4
91	4
92	8
93	3
94	2
95	8
96	2
97	1
98	2
99	4
100	8
101	2
102	4
103	6
104	2
105	6

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	3
7	2
8	2
9	4
10	6
11	4
12	8
13	2
14	4
15	2
16	4
17	3
18	2
19	1
20	6
21	8
22	8
23	8
24	1
25	2
26	6
27	2
28	6
29	4
30	8
31	6
32	4
33	6
34	4
35	8
36	2
37	1
38	2
39	1
40	2
41	1
42	2
43	2
44	4
45	3
46	2
47	4
48	8
49	2
50	4
51	2
52	4
53	2
54	4
55	3
56	2
57	1
58	6
59	2
60	2
61	2
62	2
63	2
64	2
65	4
66	8
67	1
68	2
69	6
70	8
71	3
72	2
73	1
74	6
75	8
76	8
77	8
78	8
79	8
80	1
81	2
82	6
83	2
84	6
85	1
86	2
87	4
88	4
89	4
90	4
91	4
92	8
93	3
94	2
95	8
96	2
97	1
98	2
99	4
100	8
101	2
102	4
103	6
104	2
105	6

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	3
7	2
8	2
9	4
10	6
11	4
12	8
13	2
14	4
15	2
16	4
17	3
18	2
19	1
20	6
21	8
22	8
23	8
24	1
25	2
26	6
27	2
28	6
29	4
30	8
31	6
32	4
33	6
34	4
35	8
36	2
37	1
38	2
39	1
40	2
41	1
42	2
43	2
44	4
45	3
46	2
47	4
48	8
49	2
50	4
51	2
52	4
53	2
54	4
55	3
56	2
57	1
58	6
59	2
60	2
61	2
62	2
63	2
64	2
65	4
66	8
67	1
68	2
69	6
70	8
71	3
72	2
73	1
74	6
75	8
76	8
77	8
78	8
79	8
80	1
81	2
82	6
83	2
84	6
85	1
86	2
87	4
88	4
89	4
90	4
91	4
92	8
93	3
94	2
95	8
96	2
97	1
98	2
99	4
100	8
101	2
102	4
103	6
104	2
105	6