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.

A341395 Coefficient of x^(2*n) in (-1 + Product_{k>=1} (1 + x^k)^k)^n.

Table of values

n a(n)
0 1
1 2
2 14
3 92
4 662
5 4872
6 36578
7 278161
8 2135902
9 16522967
10 128574734
11 1005321616
12 7891885382
13 62160038813
14 491003317483
15 3888045701232
16 30854283708670
17 245315312649653
18 1953735732991919
19 15583347966328833
20 124463844976490422
21 995305632560023009
22 7968042676400949882

List of values

[1, 2, 14, 92, 662, 4872, 36578, 278161, 2135902, 16522967, 128574734, 1005321616, 7891885382, 62160038813, 491003317483, 3888045701232, 30854283708670, 245315312649653, 1953735732991919, 15583347966328833, 124463844976490422, 995305632560023009, 7968042676400949882]

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

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