A109811 - cp's OEIS frontend

A109811 Triangular numbers (A000217) at Levenshtein distance 1 from another triangular number when considered as a decimal string.

n	a(n)
1	0
2	1
3	3
4	6
5	10
6	15
7	21
8	28
9	36
10	45
11	55
12	66
13	78
14	91
15	105
16	120
17	136
18	153
19	171
20	190
21	210
22	231
23	253
24	300
25	378
26	406
27	435
28	465
29	496
30	528
31	561
32	595
33	666
34	703
35	741
36	780
37	820
38	861
39	903
40	990
41	1035
42	1081
43	1128
44	1176
45	1225
46	1275
47	1326
48	1378
49	1485
50	1540
51	1653
52	1711
53	1891

[0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 300, 378, 406, 435, 465, 496, 528, 561, 595, 666, 703, 741, 780, 820, 861, 903, 990, 1035, 1081, 1128, 1176, 1225, 1275, 1326, 1378, 1485, 1540, 1653, 1711, 1891]

cp's OEIS Frontend

A109811 Triangular numbers (A000217) at Levenshtein distance 1 from another triangular number when considered as a decimal string.

Table of values

List of values