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.

A179539 a(0) = 1, a(1) = 0, a(n) = 2*n*(a(n-1) + a(n-2)), n > 1.

Table of values

n a(n)
0 1
1 0
2 4
3 24
4 224
5 2480
6 32448
7 488992
8 8343040
9 158976576
10 3346392320
11 77118115712
12 1931148192768
13 52214924020480
14 1516090021970944
15 47049148379742720
16 1554087628854837248
17 54438650425975718912
18 2015738569973900021760
19 78666734375195278145536
20 3227298917806767126691840

List of values

[1, 0, 4, 24, 224, 2480, 32448, 488992, 8343040, 158976576, 3346392320, 77118115712, 1931148192768, 52214924020480, 1516090021970944, 47049148379742720, 1554087628854837248, 54438650425975718912, 2015738569973900021760, 78666734375195278145536, 3227298917806767126691840]