A054048 - cp's OEIS frontend

A054048 Earliest sequence with a(a(n)) = n*(n+1)/2 (Triangular numbers).

n	a(n)
0	0
1	1
2	4
3	10
4	3
5	7
6	55
7	15
8	9
9	36
10	6
11	12
12	66
13	14
14	91
15	28
16	17
17	136
18	19
19	171
20	22
21	1540
22	210
23	24
24	276
25	26
26	325
27	29
28	120
29	378
30	31
31	465
32	33
33	528
34	35
35	595
36	45
37	38
38	703
39	40
40	780
41	42
42	861
43	44
44	946
45	666
46	47
47	1081
48	49
49	1176
50	51
51	1275
52	53
53	1378
54	56
55	21
56	1485
57	58
58	1653

[0, 1, 4, 10, 3, 7, 55, 15, 9, 36, 6, 12, 66, 14, 91, 28, 17, 136, 19, 171, 22, 1540, 210, 24, 276, 26, 325, 29, 120, 378, 31, 465, 33, 528, 35, 595, 45, 38, 703, 40, 780, 42, 861, 44, 946, 666, 47, 1081, 49, 1176, 51, 1275, 53, 1378, 56, 21, 1485, 58, 1653]

cp's OEIS Frontend

A054048 Earliest sequence with a(a(n)) = n*(n+1)/2 (Triangular numbers).

Table of values

List of values