A123000 - cp's OEIS frontend

A123000 a(n) is the smallest positive integer such that d(a(n))d(a(n)+1) > d(a(n-1))d(a(n-1)+1), where d(m) is the number of divisors of m and n > 1; a(1) = 1.

n	a(n)
1	1
2	2
3	3
4	5
5	8
6	14
7	15
8	20
9	35
10	63
11	80
12	99
13	104
14	195
15	224
16	384
17	440
18	560
19	935
20	1224
21	1539
22	2015
23	2079
24	5264
25	5984
26	12375
27	21735
28	41040
29	78624
30	123200
31	126224
32	156519
33	176175
34	201824
35	313599
36	338624
37	395199
38	453375
39	638000
40	1154439
41	1890944

[1, 2, 3, 5, 8, 14, 15, 20, 35, 63, 80, 99, 104, 195, 224, 384, 440, 560, 935, 1224, 1539, 2015, 2079, 5264, 5984, 12375, 21735, 41040, 78624, 123200, 126224, 156519, 176175, 201824, 313599, 338624, 395199, 453375, 638000, 1154439, 1890944]

cp's OEIS Frontend

A123000 a(n) is the smallest positive integer such that d(a(n))d(a(n)+1) > d(a(n-1))d(a(n-1)+1), where d(m) is the number of divisors of m and n > 1; a(1) = 1.

Table of values

List of values

cp's OEIS Frontend

A123000 a(n) is the smallest positive integer such that d(a(n))*d(a(n)+1) > d(a(n-1))*d(a(n-1)+1), where d(m) is the number of divisors of m and n > 1; a(1) = 1.

Table of values

List of values

A123000 a(n) is the smallest positive integer such that d(a(n))d(a(n)+1) > d(a(n-1))d(a(n-1)+1), where d(m) is the number of divisors of m and n > 1; a(1) = 1.