A128290 - cp's OEIS frontend

A128290 If p(x) is the product of the digits of the number x and s(x) the sum of the digits then the sequence lists all the numbers k for which p(s(k)) = s(p(k)), with k >= 1.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	22
11	36
12	63
13	109
14	123
15	132
16	158
17	185
18	190
19	199
20	208
21	213
22	231
23	280
24	289
25	298
26	307
27	312
28	321
29	333
30	370
31	406
32	458
33	460
34	469
35	485
36	496
37	505
38	518
39	548
40	550
41	556
42	559
43	565
44	581
45	584
46	595
47	604
48	640
49	649
50	655
51	667
52	676
53	694
54	703
55	730
56	766
57	802

[1, 2, 3, 4, 5, 6, 7, 8, 9, 22, 36, 63, 109, 123, 132, 158, 185, 190, 199, 208, 213, 231, 280, 289, 298, 307, 312, 321, 333, 370, 406, 458, 460, 469, 485, 496, 505, 518, 548, 550, 556, 559, 565, 581, 584, 595, 604, 640, 649, 655, 667, 676, 694, 703, 730, 766, 802]

cp's OEIS Frontend

A128290 If p(x) is the product of the digits of the number x and s(x) the sum of the digits then the sequence lists all the numbers k for which p(s(k)) = s(p(k)), with k >= 1.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	22
11	36
12	63
13	109
14	123
15	132
16	158
17	185
18	190
19	199
20	208
21	213
22	231
23	280
24	289
25	298
26	307
27	312
28	321
29	333
30	370
31	406
32	458
33	460
34	469
35	485
36	496
37	505
38	518
39	548
40	550
41	556
42	559
43	565
44	581
45	584
46	595
47	604
48	640
49	649
50	655
51	667
52	676
53	694
54	703
55	730
56	766
57	802

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	22
11	36
12	63
13	109
14	123
15	132
16	158
17	185
18	190
19	199
20	208
21	213
22	231
23	280
24	289
25	298
26	307
27	312
28	321
29	333
30	370
31	406
32	458
33	460
34	469
35	485
36	496
37	505
38	518
39	548
40	550
41	556
42	559
43	565
44	581
45	584
46	595
47	604
48	640
49	649
50	655
51	667
52	676
53	694
54	703
55	730
56	766
57	802

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	22
11	36
12	63
13	109
14	123
15	132
16	158
17	185
18	190
19	199
20	208
21	213
22	231
23	280
24	289
25	298
26	307
27	312
28	321
29	333
30	370
31	406
32	458
33	460
34	469
35	485
36	496
37	505
38	518
39	548
40	550
41	556
42	559
43	565
44	581
45	584
46	595
47	604
48	640
49	649
50	655
51	667
52	676
53	694
54	703
55	730
56	766
57	802