cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A119165 Numbers k such that the k-th triangular number contains only digits {2,5,6}.

Table of values

n a(n)
1 3
2 10
3 11
4 36
5 71
6 105
7 114
8 230
9 714
10 2128
11 3363
12 10550
13 32411
14 73010
15 2309210
16 3648430
17 10641950
18 23045894
19 33336636
20 72479825
21 111581563
22 229156071
23 36118284988
24 730103037471
25 22915594088989
26 106039853513914

List of values

[3, 10, 11, 36, 71, 105, 114, 230, 714, 2128, 3363, 10550, 32411, 73010, 2309210, 3648430, 10641950, 23045894, 33336636, 72479825, 111581563, 229156071, 36118284988, 730103037471, 22915594088989, 106039853513914]