A360217 - cp's OEIS frontend

A360217 a(n) is the smallest positive integer which can be represented as the sum of n distinct nonzero tetrahedral numbers in exactly n ways, or -1 if no such integer exists.

n	a(n)
1	1
2	140
3	305
4	315
5	435
6	644
7	830
8	1141
9	1425
10	1925
11	2380
12	3010
13	3805
14	4720
15	5806
16	7095
17	8510
18	10200
19	12020
20	14115
21	16460
22	19131
23	21990
24	25425
25	29275
26	33495
27	37425
28	42680
29	48300
30	54545
31	60711
32	68391
33	75726
34	84815
35	93370
36	103250
37	114115
38	125360
39	137831
40	150995
41	165545
42	179830

[1, 140, 305, 315, 435, 644, 830, 1141, 1425, 1925, 2380, 3010, 3805, 4720, 5806, 7095, 8510, 10200, 12020, 14115, 16460, 19131, 21990, 25425, 29275, 33495, 37425, 42680, 48300, 54545, 60711, 68391, 75726, 84815, 93370, 103250, 114115, 125360, 137831, 150995, 165545, 179830]

cp's OEIS Frontend

A360217 a(n) is the smallest positive integer which can be represented as the sum of n distinct nonzero tetrahedral numbers in exactly n ways, or -1 if no such integer exists.

Table of values

List of values