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.

A240504 Read (exponents of primes in the factorization of n!) modulo 2 and convert to decimal.

Table of values

n a(n)
2 1
3 3
4 3
5 7
6 1
7 3
8 11
9 11
10 1
11 3
12 11
13 23
14 51
15 43
16 43
17 87
18 23
19 47
20 15
21 95
22 215
23 431
24 47
25 47
26 295
27 423
28 391
29 783
30 143
31 287
32 1311
33 1887
34 847
35 719
36 719
37 1439
38 3471
39 2511
40 975
41 1951
42 7583
43 15167
44 14655
45 12607
46 4383
47 8767
48 575
49 575
50 16959
51 25407
52 24895
53 49791
54 639
55 10879

List of values

[1, 3, 3, 7, 1, 3, 11, 11, 1, 3, 11, 23, 51, 43, 43, 87, 23, 47, 15, 95, 215, 431, 47, 47, 295, 423, 391, 783, 143, 287, 1311, 1887, 847, 719, 719, 1439, 3471, 2511, 975, 1951, 7583, 15167, 14655, 12607, 4383, 8767, 575, 575, 16959, 25407, 24895, 49791, 639, 10879]