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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.

A144366 Shifts 2 places left under Dirichlet convolution.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 2
6 5
7 4
8 12
9 8
10 28
11 17
12 60
13 34
14 134
15 68
16 276
17 140
18 580
19 280
20 1186
21 560
22 2436
23 1128
24 4906
25 2256
26 9976
27 4516
28 20020
29 9048
30 40324
31 18096
32 80860
33 36192
34 162320
35 72418
36 324920
37 144852
38 651177
39 289704
40 1302914
41 579476
42 2608360
43 1158952

List of values

[1, 1, 1, 2, 2, 5, 4, 12, 8, 28, 17, 60, 34, 134, 68, 276, 140, 580, 280, 1186, 560, 2436, 1128, 4906, 2256, 9976, 4516, 20020, 9048, 40324, 18096, 80860, 36192, 162320, 72418, 324920, 144852, 651177, 289704, 1302914, 579476, 2608360, 1158952]

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

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