A175143 - cp's OEIS frontend

A175143 a(1)=1. a(n) = the smallest integer > a(n-1) such that d(a(n))+d(a(n)+1) > d(a(n-1))+d(a(n-1)+1), where d(m) = the number of divisors of m.

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	11
7	15
8	20
9	24
10	35
11	59
12	80
13	84
14	119
15	224
16	239
17	335
18	359
19	360
20	480
21	539
22	719
23	720
24	840
25	1079
26	1259
27	1260
28	1679
29	2519
30	4199
31	5039
32	5040
33	6720
34	7559
35	9360
36	10079
37	10080
38	15119
39	20159
40	25199
41	25200
42	27719
43	32759
44	43680
45	50399
46	55439
47	75599

[1, 2, 3, 5, 8, 11, 15, 20, 24, 35, 59, 80, 84, 119, 224, 239, 335, 359, 360, 480, 539, 719, 720, 840, 1079, 1259, 1260, 1679, 2519, 4199, 5039, 5040, 6720, 7559, 9360, 10079, 10080, 15119, 20159, 25199, 25200, 27719, 32759, 43680, 50399, 55439, 75599]

cp's OEIS Frontend

A175143 a(1)=1. a(n) = the smallest integer > a(n-1) such that d(a(n))+d(a(n)+1) > d(a(n-1))+d(a(n-1)+1), where d(m) = the number of divisors of m.

Table of values

List of values