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.

A327847 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 have i colors in (weakly) increasing order.

Table of values

n a(n)
0 0
1 0
2 3
3 10
4 39
5 100
6 303
7 782
8 2009
9 5388
10 12839
11 32658
12 79673
13 191500
14 459745
15 1090622
16 2569597
17 5932304
18 13906405
19 31740090
20 72160311
21 164296384
22 369673125
23 827781598
24 1834885695
25 4076433368
26 8966677703
27 19639987986
28 42751905899
29 92703023676
30 200647122467

List of values

[0, 0, 3, 10, 39, 100, 303, 782, 2009, 5388, 12839, 32658, 79673, 191500, 459745, 1090622, 2569597, 5932304, 13906405, 31740090, 72160311, 164296384, 369673125, 827781598, 1834885695, 4076433368, 8966677703, 19639987986, 42751905899, 92703023676, 200647122467]