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.

A088494 Let P(n,k) = n!/(Product_{i=1..pi(n)/2^(k-1)} prime(i)) be an integer matrix of "partial" factorials. Then a(n) = sum_{k=1..8} floor( P(n,k)/P(n-1,k)).

Table of values

n a(n)
2 15
3 20
4 32
5 36
6 48
7 41
8 64
9 72
10 80
11 78
12 96
13 81
14 112
15 120
16 128
17 120
18 144
19 94
20 160
21 168
22 176
23 162
24 192
25 200
26 208
27 216
28 224
29 177
30 240
31 218
32 256
33 264
34 272
35 280
36 288
37 195
38 304
39 312
40 320
41 288
42 336
43 261
44 352
45 360
46 368
47 330
48 384
49 392
50 400
51 408
52 416
53 212
54 432
55 440
56 448

List of values

[15, 20, 32, 36, 48, 41, 64, 72, 80, 78, 96, 81, 112, 120, 128, 120, 144, 94, 160, 168, 176, 162, 192, 200, 208, 216, 224, 177, 240, 218, 256, 264, 272, 280, 288, 195, 304, 312, 320, 288, 336, 261, 352, 360, 368, 330, 384, 392, 400, 408, 416, 212, 432, 440, 448]