A377729 - cp's OEIS frontend

A377729 a(n) is the smallest number which can be represented as the sum of n distinct nonzero n-gonal numbers in exactly 2 ways.

n	a(n)
3	19
4	90
5	162
6	299
7	509
8	816
9	1248
10	1837
11	2619
12	3634
13	4926
14	6543
15	8537
16	10964
17	13884
18	17361
19	21463
20	26262
21	31834
22	38259
23	45621
24	54008
25	63512
26	74229
27	86259
28	99706
29	114678
30	131287
31	149649
32	169884
33	192116
34	216473
35	243087
36	272094
37	303634
38	337851
39	374893
40	414912
41	458064
42	504509

[19, 90, 162, 299, 509, 816, 1248, 1837, 2619, 3634, 4926, 6543, 8537, 10964, 13884, 17361, 21463, 26262, 31834, 38259, 45621, 54008, 63512, 74229, 86259, 99706, 114678, 131287, 149649, 169884, 192116, 216473, 243087, 272094, 303634, 337851, 374893, 414912, 458064, 504509]

cp's OEIS Frontend

A377729 a(n) is the smallest number which can be represented as the sum of n distinct nonzero n-gonal numbers in exactly 2 ways.

Table of values

List of values