A048572 - cp's OEIS frontend

A048572 a(n) = sum of digits of a(n-1)*a(n-2).

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	5
7	4
8	2
9	8
10	7
11	11
12	14
13	10
14	5
15	5
16	7
17	8
18	11
19	16
20	14
21	8
22	4
23	5
24	2
25	1
26	2
27	2
28	4
29	8
30	5
31	4
32	2
33	8
34	7
35	11
36	14
37	10
38	5
39	5
40	7
41	8
42	11
43	16
44	14
45	8
46	4
47	5
48	2
49	1
50	2
51	2
52	4
53	8
54	5
55	4
56	2
57	8
58	7
59	11
60	14
61	10
62	5
63	5
64	7
65	8
66	11
67	16
68	14
69	8
70	4
71	5
72	2

[1, 2, 2, 4, 8, 5, 4, 2, 8, 7, 11, 14, 10, 5, 5, 7, 8, 11, 16, 14, 8, 4, 5, 2, 1, 2, 2, 4, 8, 5, 4, 2, 8, 7, 11, 14, 10, 5, 5, 7, 8, 11, 16, 14, 8, 4, 5, 2, 1, 2, 2, 4, 8, 5, 4, 2, 8, 7, 11, 14, 10, 5, 5, 7, 8, 11, 16, 14, 8, 4, 5, 2]

cp's OEIS Frontend

A048572 a(n) = sum of digits of a(n-1)*a(n-2).

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	5
7	4
8	2
9	8
10	7
11	11
12	14
13	10
14	5
15	5
16	7
17	8
18	11
19	16
20	14
21	8
22	4
23	5
24	2
25	1
26	2
27	2
28	4
29	8
30	5
31	4
32	2
33	8
34	7
35	11
36	14
37	10
38	5
39	5
40	7
41	8
42	11
43	16
44	14
45	8
46	4
47	5
48	2
49	1
50	2
51	2
52	4
53	8
54	5
55	4
56	2
57	8
58	7
59	11
60	14
61	10
62	5
63	5
64	7
65	8
66	11
67	16
68	14
69	8
70	4
71	5
72	2

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	5
7	4
8	2
9	8
10	7
11	11
12	14
13	10
14	5
15	5
16	7
17	8
18	11
19	16
20	14
21	8
22	4
23	5
24	2
25	1
26	2
27	2
28	4
29	8
30	5
31	4
32	2
33	8
34	7
35	11
36	14
37	10
38	5
39	5
40	7
41	8
42	11
43	16
44	14
45	8
46	4
47	5
48	2
49	1
50	2
51	2
52	4
53	8
54	5
55	4
56	2
57	8
58	7
59	11
60	14
61	10
62	5
63	5
64	7
65	8
66	11
67	16
68	14
69	8
70	4
71	5
72	2

n	a(n)
1	1
2	2
3	2
4	4
5	8
6	5
7	4
8	2
9	8
10	7
11	11
12	14
13	10
14	5
15	5
16	7
17	8
18	11
19	16
20	14
21	8
22	4
23	5
24	2
25	1
26	2
27	2
28	4
29	8
30	5
31	4
32	2
33	8
34	7
35	11
36	14
37	10
38	5
39	5
40	7
41	8
42	11
43	16
44	14
45	8
46	4
47	5
48	2
49	1
50	2
51	2
52	4
53	8
54	5
55	4
56	2
57	8
58	7
59	11
60	14
61	10
62	5
63	5
64	7
65	8
66	11
67	16
68	14
69	8
70	4
71	5
72	2