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.

A129284 a(n) = A129150(n) / 4, where A129150(n) = n-th arithmetic derivative of 2^3.

Table of values

n a(n)
0 2
1 3
2 4
3 8
4 20
5 44
6 92
7 188
8 380
9 856
10 2148
11 5024
12 17616
13 58768
14 176320
15 755904
16 3305920
17 13885184
18 69634816
19 348174336
20 2385273856
21 14652403712
22 102566830080
23 849285738496
24 6035962949632
25 44017806979072
26 308166534991872
27 2380768960708608
28 23410894780694528

List of values

[2, 3, 4, 8, 20, 44, 92, 188, 380, 856, 2148, 5024, 17616, 58768, 176320, 755904, 3305920, 13885184, 69634816, 348174336, 2385273856, 14652403712, 102566830080, 849285738496, 6035962949632, 44017806979072, 308166534991872, 2380768960708608, 23410894780694528]

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

Content is available under The OEIS End-User License Agreement.