A230653 - cp's OEIS frontend

A230653 Numbers k such that tau(k+1) - tau(k) = 3, where tau(k) = the number of divisors of k (A000005).

n	a(n)
1	49
2	99
3	1023
4	1681
5	1935
6	2499
7	8649
8	9603
9	20449
10	21903
11	23715
12	29583
13	30975
14	38024
15	43263
16	58563
17	60515
18	71824
19	74528
20	110223
21	130321
22	136899
23	145924
24	150543
25	154449
26	165649
27	181475
28	216224
29	224675
30	233288
31	243049
32	256035
33	258063
34	265225
35	294849
36	300303

[49, 99, 1023, 1681, 1935, 2499, 8649, 9603, 20449, 21903, 23715, 29583, 30975, 38024, 43263, 58563, 60515, 71824, 74528, 110223, 130321, 136899, 145924, 150543, 154449, 165649, 181475, 216224, 224675, 233288, 243049, 256035, 258063, 265225, 294849, 300303]

cp's OEIS Frontend

A230653 Numbers k such that tau(k+1) - tau(k) = 3, where tau(k) = the number of divisors of k (A000005).

Table of values

List of values