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.

A106340 Triangle T, read by rows, equal to the matrix inverse of the triangle defined by [T^-1](n,k) = (n-k)!*A008278(n+1,k+1), for n>=k>=0, where A008278 is a triangle of Stirling numbers of 2nd kind.

Table of values

n a(n)
0 1
1 -1
2 1
3 1
4 -3
5 1
6 -1
7 9
8 -7
9 1
10 1
11 -45
12 55
13 -15
14 1
15 -1
16 585
17 -835
18 285
19 -31
20 1
21 1
22 -21105
23 30835
24 -11025
25 1351
26 -63
27 1
28 -1
29 1858185
30 -2719675
31 977445
32 -121891
33 6069
34 -127
35 1
36 1
37 -367958745
38 538607755
39 -193649085
40 24187051
41 -1213065
42 26335
43 -255
44 1
45 -1
46 157169540745
47 -230061795355
48 82717588485

List of values

[1, -1, 1, 1, -3, 1, -1, 9, -7, 1, 1, -45, 55, -15, 1, -1, 585, -835, 285, -31, 1, 1, -21105, 30835, -11025, 1351, -63, 1, -1, 1858185, -2719675, 977445, -121891, 6069, -127, 1, 1, -367958745, 538607755, -193649085, 24187051, -1213065, 26335, -255, 1, -1, 157169540745, -230061795355, 82717588485]