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.

A274278 a(n) = ((n+1)^(n-1) - (n-1)^(n-1))/2 for n>=1.

Table of values

n a(n)
0 1
1 0
2 1
3 6
4 49
5 520
6 6841
7 107744
8 1979713
9 41611392
10 985263601
11 25958682112
12 753424361713
13 23888905963520
14 821659980883561
15 30472793606184960
16 1212264580564478209
17 51496393511442350080
18 2326573297949232710881
19 111398795962351731212288
20 5635038492335356268228401
21 300285949343202022103973888
22 16814498551154751682934232601
23 987042812055984079330393194496

List of values

[1, 0, 1, 6, 49, 520, 6841, 107744, 1979713, 41611392, 985263601, 25958682112, 753424361713, 23888905963520, 821659980883561, 30472793606184960, 1212264580564478209, 51496393511442350080, 2326573297949232710881, 111398795962351731212288, 5635038492335356268228401, 300285949343202022103973888, 16814498551154751682934232601, 987042812055984079330393194496]

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

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