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.

A102308 If n = product{primes p(k)|n} p(k)^b(n,p(k)), where p(k) is the k-th prime that divides n (when these primes are listed from smallest to largest) and each b(n,p(k)) is a positive integer, then the sequence contains the non-prime-powers n such that p(k)^b(n,p(k)) > p(k+1) for all k, 1<=k<= -1 + number of distinct prime divisors of n.

Table of values

n a(n)
1 12
2 24
3 36
4 40
5 45
6 48
7 56
8 63
9 72
10 80
11 96
12 108
13 112
14 135
15 144
16 160
17 175
18 176
19 180
20 189
21 192
22 200
23 208
24 216
25 224
26 225
27 252
28 275
29 288
30 297
31 320
32 324
33 325
34 351
35 352
36 360
37 384
38 392
39 400
40 405
41 416
42 425
43 432
44 441
45 448
46 459
47 475
48 504
49 513
50 539
51 540
52 544
53 567
54 575

List of values

[12, 24, 36, 40, 45, 48, 56, 63, 72, 80, 96, 108, 112, 135, 144, 160, 175, 176, 180, 189, 192, 200, 208, 216, 224, 225, 252, 275, 288, 297, 320, 324, 325, 351, 352, 360, 384, 392, 400, 405, 416, 425, 432, 441, 448, 459, 475, 504, 513, 539, 540, 544, 567, 575]