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.

A232774 Triangle T(n,k), read by rows, given by T(n,0)=1, T(n,1)=2^(n+1)-n-2, T(n,n)=(-1)^(n-1) for n > 0, T(n,k)=T(n-1,k)-T(n-1,k-1) for 1 < k < n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 4
5 -1
6 1
7 11
8 -5
9 1
10 1
11 26
12 -16
13 6
14 -1
15 1
16 57
17 -42
18 22
19 -7
20 1
21 1
22 120
23 -99
24 64
25 -29
26 8
27 -1
28 1
29 247
30 -219
31 163
32 -93
33 37
34 -9
35 1
36 1
37 502
38 -466
39 382
40 -256
41 130
42 -46
43 10
44 -1
45 1
46 1013
47 -968
48 848
49 -638
50 386
51 -176
52 56
53 -11
54 1
55 2036
56 -1981
57 1816
58 -1486
59 1024

List of values

[1, 1, 1, 1, 4, -1, 1, 11, -5, 1, 1, 26, -16, 6, -1, 1, 57, -42, 22, -7, 1, 1, 120, -99, 64, -29, 8, -1, 1, 247, -219, 163, -93, 37, -9, 1, 1, 502, -466, 382, -256, 130, -46, 10, -1, 1, 1013, -968, 848, -638, 386, -176, 56, -11, 1, 2036, -1981, 1816, -1486, 1024]