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.

A261490 The total element sum of the n-fold f transform applied to the length n sequence of 1's. And f returns a sorted result after multiplying the elements in its input sequence with 1, 2, 3,... in descending size order.

Table of values

n a(n)
0 0
1 1
2 4
3 19
4 100
5 633
6 4626
7 37878
8 348224
9 3542952
10 39339852
11 478962252
12 6289532928
13 89038853856
14 1346224983936
15 21729308136720
16 371924399416320
17 6740200653419520
18 128878557725067264
19 2598800542616444724
20 54986036469506668800
21 1217069235297874269792

List of values

[0, 1, 4, 19, 100, 633, 4626, 37878, 348224, 3542952, 39339852, 478962252, 6289532928, 89038853856, 1346224983936, 21729308136720, 371924399416320, 6740200653419520, 128878557725067264, 2598800542616444724, 54986036469506668800, 1217069235297874269792]