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.

A247365 Central terms of triangles A102472 and A102473.

Table of values

n a(n)
1 1
2 2
3 13
4 130
5 1807
6 32280
7 705421
8 18237164
9 544505521
10 18438430990
11 698246022001
12 29239344782022
13 1341545985079903
14 66926098621724300
15 3606825675219961657
16 208826700420103831480
17 12926842112341879416001
18 851962999949978920707834
19 59561112879709434549509941

List of values

[1, 2, 13, 130, 1807, 32280, 705421, 18237164, 544505521, 18438430990, 698246022001, 29239344782022, 1341545985079903, 66926098621724300, 3606825675219961657, 208826700420103831480, 12926842112341879416001, 851962999949978920707834, 59561112879709434549509941]

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

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