A102802 - cp's OEIS frontend

A102802 Let f(n) be the minimal number of distinct nonzero tetrahedral numbers that add to n (or -1 if n is not a sum of distinct tetrahedral numbers); sequence gives numbers n for which f(n) = 3.

n	a(n)
1	15
2	25
3	31
4	34
5	40
6	46
7	49
8	59
9	61
10	65
11	67
12	70
13	77
14	80
15	86
16	89
17	92
18	95
19	98
20	101
21	105
22	108
23	111
24	114
25	123
26	125
27	129
28	131
29	134
30	139
31	141
32	144
33	150
34	156
35	159
36	160
37	170
38	177
39	179
40	180
41	186
42	189
43	195
44	196
45	201
46	205
47	208
48	210
49	211
50	214
51	222
52	225
53	231

[15, 25, 31, 34, 40, 46, 49, 59, 61, 65, 67, 70, 77, 80, 86, 89, 92, 95, 98, 101, 105, 108, 111, 114, 123, 125, 129, 131, 134, 139, 141, 144, 150, 156, 159, 160, 170, 177, 179, 180, 186, 189, 195, 196, 201, 205, 208, 210, 211, 214, 222, 225, 231]

cp's OEIS Frontend

A102802 Let f(n) be the minimal number of distinct nonzero tetrahedral numbers that add to n (or -1 if n is not a sum of distinct tetrahedral numbers); sequence gives numbers n for which f(n) = 3.

Table of values

List of values

n	a(n)
1	15
2	25
3	31
4	34
5	40
6	46
7	49
8	59
9	61
10	65
11	67
12	70
13	77
14	80
15	86
16	89
17	92
18	95
19	98
20	101
21	105
22	108
23	111
24	114
25	123
26	125
27	129
28	131
29	134
30	139
31	141
32	144
33	150
34	156
35	159
36	160
37	170
38	177
39	179
40	180
41	186
42	189
43	195
44	196
45	201
46	205
47	208
48	210
49	211
50	214
51	222
52	225
53	231

n	a(n)
1	15
2	25
3	31
4	34
5	40
6	46
7	49
8	59
9	61
10	65
11	67
12	70
13	77
14	80
15	86
16	89
17	92
18	95
19	98
20	101
21	105
22	108
23	111
24	114
25	123
26	125
27	129
28	131
29	134
30	139
31	141
32	144
33	150
34	156
35	159
36	160
37	170
38	177
39	179
40	180
41	186
42	189
43	195
44	196
45	201
46	205
47	208
48	210
49	211
50	214
51	222
52	225
53	231

n	a(n)
1	15
2	25
3	31
4	34
5	40
6	46
7	49
8	59
9	61
10	65
11	67
12	70
13	77
14	80
15	86
16	89
17	92
18	95
19	98
20	101
21	105
22	108
23	111
24	114
25	123
26	125
27	129
28	131
29	134
30	139
31	141
32	144
33	150
34	156
35	159
36	160
37	170
38	177
39	179
40	180
41	186
42	189
43	195
44	196
45	201
46	205
47	208
48	210
49	211
50	214
51	222
52	225
53	231