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.

A327841 Number of colored compositions of n using all colors of a 2-set such that all parts have different color patterns and the patterns for parts i are sorted and have i colors in (weakly) increasing order.

Table of values

n a(n)
0 0
1 0
2 2
3 10
4 27
5 70
6 223
7 508
8 1193
9 2822
10 7048
11 15690
12 35072
13 79018
14 167667
15 382976
16 823599
17 1742082
18 3765187
19 7785290
20 16299074
21 34337380
22 70503188
23 143916326
24 296390373
25 597048414
26 1202172962
27 2416614660
28 4813022691
29 9551780272
30 18833189269
31 37248671816

List of values

[0, 0, 2, 10, 27, 70, 223, 508, 1193, 2822, 7048, 15690, 35072, 79018, 167667, 382976, 823599, 1742082, 3765187, 7785290, 16299074, 34337380, 70503188, 143916326, 296390373, 597048414, 1202172962, 2416614660, 4813022691, 9551780272, 18833189269, 37248671816]