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.

A376325 A Catalan-like sequence formed by summing the truncation of the terms of a Catalan Triangle A009766 where the number of row terms are truncated to ceiling((n+3)*log(3)/log(2)) - (n+4).

Table of values

n a(n)
1 1
2 2
3 5
4 14
5 28
6 76
7 151
8 412
9 1239
10 2689
11 7724
12 16351
13 46607
14 98276
15 280035
16 871218
17 1967577
18 5819850
19 12749014
20 37260985
21 118163637
22 272787542
23 819934670
24 1829959304
25 5422130623
26 11963162678
27 35243160809
28 112614062317
29 262572197079
30 795710438547
31 1794155974237

List of values

[1, 2, 5, 14, 28, 76, 151, 412, 1239, 2689, 7724, 16351, 46607, 98276, 280035, 871218, 1967577, 5819850, 12749014, 37260985, 118163637, 272787542, 819934670, 1829959304, 5422130623, 11963162678, 35243160809, 112614062317, 262572197079, 795710438547, 1794155974237]