A074997 - cp's OEIS frontend

A074997 Numbers which are sandwiched between two numbers having the same unordered canonical form.

n	a(n)
1	4
2	6
3	12
4	18
5	19
6	30
7	34
8	42
9	51
10	55
11	56
12	60
13	72
14	86
15	92
16	94
17	102
18	108
19	138
20	142
21	144
22	150
23	160
24	180
25	184
26	186
27	192
28	198
29	202
30	204
31	214
32	216
33	218
34	220
35	228
36	236
37	240
38	243
39	248
40	249
41	266
42	270
43	282
44	300
45	302
46	304
47	307
48	312
49	320
50	322
51	328
52	340
53	341
54	348
55	349
56	392

[4, 6, 12, 18, 19, 30, 34, 42, 51, 55, 56, 60, 72, 86, 92, 94, 102, 108, 138, 142, 144, 150, 160, 180, 184, 186, 192, 198, 202, 204, 214, 216, 218, 220, 228, 236, 240, 243, 248, 249, 266, 270, 282, 300, 302, 304, 307, 312, 320, 322, 328, 340, 341, 348, 349, 392]

cp's OEIS Frontend

A074997 Numbers which are sandwiched between two numbers having the same unordered canonical form.

Table of values

List of values

n	a(n)
1	4
2	6
3	12
4	18
5	19
6	30
7	34
8	42
9	51
10	55
11	56
12	60
13	72
14	86
15	92
16	94
17	102
18	108
19	138
20	142
21	144
22	150
23	160
24	180
25	184
26	186
27	192
28	198
29	202
30	204
31	214
32	216
33	218
34	220
35	228
36	236
37	240
38	243
39	248
40	249
41	266
42	270
43	282
44	300
45	302
46	304
47	307
48	312
49	320
50	322
51	328
52	340
53	341
54	348
55	349
56	392

n	a(n)
1	4
2	6
3	12
4	18
5	19
6	30
7	34
8	42
9	51
10	55
11	56
12	60
13	72
14	86
15	92
16	94
17	102
18	108
19	138
20	142
21	144
22	150
23	160
24	180
25	184
26	186
27	192
28	198
29	202
30	204
31	214
32	216
33	218
34	220
35	228
36	236
37	240
38	243
39	248
40	249
41	266
42	270
43	282
44	300
45	302
46	304
47	307
48	312
49	320
50	322
51	328
52	340
53	341
54	348
55	349
56	392

n	a(n)
1	4
2	6
3	12
4	18
5	19
6	30
7	34
8	42
9	51
10	55
11	56
12	60
13	72
14	86
15	92
16	94
17	102
18	108
19	138
20	142
21	144
22	150
23	160
24	180
25	184
26	186
27	192
28	198
29	202
30	204
31	214
32	216
33	218
34	220
35	228
36	236
37	240
38	243
39	248
40	249
41	266
42	270
43	282
44	300
45	302
46	304
47	307
48	312
49	320
50	322
51	328
52	340
53	341
54	348
55	349
56	392