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.

A361539 a(n) = A361540(n, n-2) for n >= 2, a diagonal of triangle A361540.

Table of values

n a(n)
2 3
3 39
4 426
5 4550
6 50085
7 577731
8 7022596
9 90148860
10 1222753815
11 17515226465
12 264663151038
13 4212100028994
14 70475063838361
15 1237144088015535
16 22735980569119560
17 436467520716475064
18 8733235757816095083
19 181740089309026259565
20 3925458146197916823970

List of values

[3, 39, 426, 4550, 50085, 577731, 7022596, 90148860, 1222753815, 17515226465, 264663151038, 4212100028994, 70475063838361, 1237144088015535, 22735980569119560, 436467520716475064, 8733235757816095083, 181740089309026259565, 3925458146197916823970]

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

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