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.

A175934 Number of lattice paths from (0,0) to (n,n) using steps S={(1,0),(0,1),(r,r)|0 that never go above the line y=x.

Table of values

n a(n)
0 1
1 2
2 7
3 27
4 116
5 532
6 2554
7 12675
8 64507
9 334836
10 1765833
11 9434779
12 50962640
13 277839361
14 1526834471
15 8448751385
16 47035469902
17 263260232668
18 1480527858436
19 8361881707770
20 47409359120684
21 269736194796537
22 1539547726712437
23 8812663513352489
24 50579825742416942
25 291012706492224315
26 1678146650028389023

List of values

[1, 2, 7, 27, 116, 532, 2554, 12675, 64507, 334836, 1765833, 9434779, 50962640, 277839361, 1526834471, 8448751385, 47035469902, 263260232668, 1480527858436, 8361881707770, 47409359120684, 269736194796537, 1539547726712437, 8812663513352489, 50579825742416942, 291012706492224315, 1678146650028389023]

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

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