A374807 - cp's OEIS frontend

A374807 a(n) is the smallest number which can be represented as the sum of 4 distinct nonzero triangular numbers in exactly n ways, or -1 if no such number exists.

n	a(n)
1	20
2	38
3	47
4	64
5	73
6	92
7	97
8	110
9	127
10	115
11	130
12	164
13	185
14	172
15	208
16	157
17	199
18	235
19	247
20	232
21	220
22	272
23	277
24	304
25	280
26	361
27	262
28	307
29	319
30	391
31	322
32	292
33	495
34	415
35	337
36	367
37	370
38	382
39	478
40	482
41	412
42	409
43	445
44	430
45	467
46	500
47	427
48	532
49	493

[20, 38, 47, 64, 73, 92, 97, 110, 127, 115, 130, 164, 185, 172, 208, 157, 199, 235, 247, 232, 220, 272, 277, 304, 280, 361, 262, 307, 319, 391, 322, 292, 495, 415, 337, 367, 370, 382, 478, 482, 412, 409, 445, 430, 467, 500, 427, 532, 493]

cp's OEIS Frontend

A374807 a(n) is the smallest number which can be represented as the sum of 4 distinct nonzero triangular numbers in exactly n ways, or -1 if no such number exists.

Table of values

List of values

n	a(n)
1	20
2	38
3	47
4	64
5	73
6	92
7	97
8	110
9	127
10	115
11	130
12	164
13	185
14	172
15	208
16	157
17	199
18	235
19	247
20	232
21	220
22	272
23	277
24	304
25	280
26	361
27	262
28	307
29	319
30	391
31	322
32	292
33	495
34	415
35	337
36	367
37	370
38	382
39	478
40	482
41	412
42	409
43	445
44	430
45	467
46	500
47	427
48	532
49	493

n	a(n)
1	20
2	38
3	47
4	64
5	73
6	92
7	97
8	110
9	127
10	115
11	130
12	164
13	185
14	172
15	208
16	157
17	199
18	235
19	247
20	232
21	220
22	272
23	277
24	304
25	280
26	361
27	262
28	307
29	319
30	391
31	322
32	292
33	495
34	415
35	337
36	367
37	370
38	382
39	478
40	482
41	412
42	409
43	445
44	430
45	467
46	500
47	427
48	532
49	493

n	a(n)
1	20
2	38
3	47
4	64
5	73
6	92
7	97
8	110
9	127
10	115
11	130
12	164
13	185
14	172
15	208
16	157
17	199
18	235
19	247
20	232
21	220
22	272
23	277
24	304
25	280
26	361
27	262
28	307
29	319
30	391
31	322
32	292
33	495
34	415
35	337
36	367
37	370
38	382
39	478
40	482
41	412
42	409
43	445
44	430
45	467
46	500
47	427
48	532
49	493