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.

A291846 Central terms in irregular triangle A291845.

Table of values

n a(n)
0 1
1 1
2 5
3 33
4 283
5 2995
6 37723
7 551047
8 9157923
9 170606547
10 3521075919
11 79741123539
12 1965955092517
13 52414187219485
14 1502559229282213
15 46087421890091145
16 1506033038595292467
17 52232959640093489043
18 1916263566511685329711
19 74142047814365044902307
20 3017192203838382727894241
21 128829022389463544587355721
22 5758871157244067281788041809

List of values

[1, 1, 5, 33, 283, 2995, 37723, 551047, 9157923, 170606547, 3521075919, 79741123539, 1965955092517, 52414187219485, 1502559229282213, 46087421890091145, 1506033038595292467, 52232959640093489043, 1916263566511685329711, 74142047814365044902307, 3017192203838382727894241, 128829022389463544587355721, 5758871157244067281788041809]

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

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