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.

A358928 a(n) is the smallest centered triangular number with exactly n distinct prime factors.

Table of values

n a(n)
0 1
1 4
2 10
3 460
4 9010
5 772210
6 20120860
7 1553569960
8 85507715710
9 14932196985010
10 1033664429333260
11 197628216951078460
12 21266854897681220860
13 7423007155473283614010
14 3108276166302017120182510
15 851452464506763307285599610
16 32749388246772812069108696710

List of values

[1, 4, 10, 460, 9010, 772210, 20120860, 1553569960, 85507715710, 14932196985010, 1033664429333260, 197628216951078460, 21266854897681220860, 7423007155473283614010, 3108276166302017120182510, 851452464506763307285599610, 32749388246772812069108696710]

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

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