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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.

A325667 First term of n-th difference sequence of (floor(k*r)), r = -sqrt(3), k >= 0.

Table of values

n a(n)
1 -2
2 0
3 0
4 1
5 -4
6 10
7 -20
8 36
9 -64
10 120
11 -240
12 496
13 -1024
14 2080
15 -4159
16 8240
17 -16248
18 31824
19 -61403
20 115292
21 -207670
22 352716
23 -550430
24 748144
25 -748144
26 0
27 2848366
28 -10897032
29 30955332
30 -77558759
31 181129040
32 -404458736
33 875889376
34 -1855921143
35 3870685664

List of values

[-2, 0, 0, 1, -4, 10, -20, 36, -64, 120, -240, 496, -1024, 2080, -4159, 8240, -16248, 31824, -61403, 115292, -207670, 352716, -550430, 748144, -748144, 0, 2848366, -10897032, 30955332, -77558759, 181129040, -404458736, 875889376, -1855921143, 3870685664]

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

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