A158030 - cp's OEIS frontend

A158030 Triangular numbers t such that all the digits needed to write the consecutive triangular numbers from 0 to t fill exactly an equilateral triangle (no holes, no overlaps).

n	a(n)
1	0
2	3
3	10
4	21
5	153
6	210
7	378
8	496
9	820
10	1431
11	3081
12	4656
13	8646
14	11628
15	15051
16	17766
17	22578
18	26335
19	32896
20	37950
21	46665
22	53301
23	64620
24	73153
25	87571
26	98346
27	108345
28	113526
29	130305
30	162735
31	185136
32	193131
33	218791
34	267546
35	300700
36	312445
37	349866

[0, 3, 10, 21, 153, 210, 378, 496, 820, 1431, 3081, 4656, 8646, 11628, 15051, 17766, 22578, 26335, 32896, 37950, 46665, 53301, 64620, 73153, 87571, 98346, 108345, 113526, 130305, 162735, 185136, 193131, 218791, 267546, 300700, 312445, 349866]

cp's OEIS Frontend

A158030 Triangular numbers t such that all the digits needed to write the consecutive triangular numbers from 0 to t fill exactly an equilateral triangle (no holes, no overlaps).

Table of values

List of values