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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.

A359647 a(n) = [x^n] hypergeom([1/4, 3/4], [2], 64*x). The central terms of the Motzkin triangle A359364 without zeros.

Table of values

n a(n)
0 1
1 6
2 140
3 4620
4 180180
5 7759752
6 356948592
7 17210021400
8 859544957700
9 44123307828600
10 2315270298060720
11 123691561681243920
12 6707888537328997200
13 368417878127146461600
14 20455964090297751153600
15 1146556787261188952159280
16 64797319609481605046295780

List of values

[1, 6, 140, 4620, 180180, 7759752, 356948592, 17210021400, 859544957700, 44123307828600, 2315270298060720, 123691561681243920, 6707888537328997200, 368417878127146461600, 20455964090297751153600, 1146556787261188952159280, 64797319609481605046295780]

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

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