A378675 - cp's OEIS frontend

A378675 Areas of trapezoids with exactly one pair of parallel sides having prime sides and height.

n	a(n)
1	15
2	21
3	27
4	27
5	45
6	45
7	55
8	63
9	65
10	81
11	85
12	85
13	95
14	99
15	115
16	117
17	125
18	125
19	135
20	145
21	155
22	171
23	175
24	175
25	185
26	189
27	205
28	207
29	225
30	235
31	243
32	245
33	265
34	275
35	279
36	295
37	297
38	315
39	315
40	325
41	333
42	335
43	355
44	365
45	385
46	387
47	405
48	407
49	425
50	451
51	455
52	459
53	473
54	475
55	475

[15, 21, 27, 27, 45, 45, 55, 63, 65, 81, 85, 85, 95, 99, 115, 117, 125, 125, 135, 145, 155, 171, 175, 175, 185, 189, 205, 207, 225, 235, 243, 245, 265, 275, 279, 295, 297, 315, 315, 325, 333, 335, 355, 365, 385, 387, 405, 407, 425, 451, 455, 459, 473, 475, 475]

cp's OEIS Frontend

A378675 Areas of trapezoids with exactly one pair of parallel sides having prime sides and height.

Table of values

List of values

n	a(n)
1	15
2	21
3	27
4	27
5	45
6	45
7	55
8	63
9	65
10	81
11	85
12	85
13	95
14	99
15	115
16	117
17	125
18	125
19	135
20	145
21	155
22	171
23	175
24	175
25	185
26	189
27	205
28	207
29	225
30	235
31	243
32	245
33	265
34	275
35	279
36	295
37	297
38	315
39	315
40	325
41	333
42	335
43	355
44	365
45	385
46	387
47	405
48	407
49	425
50	451
51	455
52	459
53	473
54	475
55	475

n	a(n)
1	15
2	21
3	27
4	27
5	45
6	45
7	55
8	63
9	65
10	81
11	85
12	85
13	95
14	99
15	115
16	117
17	125
18	125
19	135
20	145
21	155
22	171
23	175
24	175
25	185
26	189
27	205
28	207
29	225
30	235
31	243
32	245
33	265
34	275
35	279
36	295
37	297
38	315
39	315
40	325
41	333
42	335
43	355
44	365
45	385
46	387
47	405
48	407
49	425
50	451
51	455
52	459
53	473
54	475
55	475

n	a(n)
1	15
2	21
3	27
4	27
5	45
6	45
7	55
8	63
9	65
10	81
11	85
12	85
13	95
14	99
15	115
16	117
17	125
18	125
19	135
20	145
21	155
22	171
23	175
24	175
25	185
26	189
27	205
28	207
29	225
30	235
31	243
32	245
33	265
34	275
35	279
36	295
37	297
38	315
39	315
40	325
41	333
42	335
43	355
44	365
45	385
46	387
47	405
48	407
49	425
50	451
51	455
52	459
53	473
54	475
55	475