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.

A076153 Numbers n such that Omega(n) = Omega(n-1)^2, where Omega(m) (A001222) denotes the number of prime factors of m, counted with multiplicity.

Table of values

n a(n)
1 3
2 16
3 36
4 40
5 56
6 88
7 135
8 156
9 184
10 204
11 210
12 220
13 248
14 250
15 260
16 296
17 306
18 315
19 328
20 330
21 340
22 342
23 372
24 414
25 459
26 472
27 490
28 516
29 536
30 546
31 580
32 584
33 636
34 650
35 686
36 690
37 708
38 714
39 732
40 735
41 738
42 804
43 808
44 819
45 836
46 850
47 852
48 870
49 872
50 940
51 950
52 966
53 975
54 996
55 999

List of values

[3, 16, 36, 40, 56, 88, 135, 156, 184, 204, 210, 220, 248, 250, 260, 296, 306, 315, 328, 330, 340, 342, 372, 414, 459, 472, 490, 516, 536, 546, 580, 584, 636, 650, 686, 690, 708, 714, 732, 735, 738, 804, 808, 819, 836, 850, 852, 870, 872, 940, 950, 966, 975, 996, 999]

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

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