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.

A259746 Triangular numbers representable as x*y+x+y such that x and y are triangular numbers, x>=y>1.

Table of values

n a(n)
1 15
2 120
3 153
4 351
5 406
6 741
7 1891
8 3081
9 3403
10 4465
11 5151
12 5565
13 6555
14 9453
15 9591
16 18721
17 22791
18 38226
19 39903
20 46056
21 52326
22 79401
23 85491
24 91378
25 159895
26 187578
27 207690
28 222111
29 227475
30 229503
31 266815
32 274911
33 280875
34 326028
35 334971
36 354903
37 373680
38 410871
39 474825
40 609960

List of values

[15, 120, 153, 351, 406, 741, 1891, 3081, 3403, 4465, 5151, 5565, 6555, 9453, 9591, 18721, 22791, 38226, 39903, 46056, 52326, 79401, 85491, 91378, 159895, 187578, 207690, 222111, 227475, 229503, 266815, 274911, 280875, 326028, 334971, 354903, 373680, 410871, 474825, 609960]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.