A063964 - cp's OEIS frontend

A063964 Numbers k such that k and k+1 have the same sum of squarefree divisors, or sqf(k) = sqf(k+1), where sqf(k) = A048250(k).

n	a(n)
1	11
2	14
3	224
4	957
5	1334
6	1634
7	2685
8	9347
9	13915
10	16260
11	20145
12	20335
13	33998
14	37236
15	42251
16	42818
17	51624
18	55308
19	56419
20	56975
21	71874
22	74918
23	77748
24	79824
25	79826
26	79833
27	84134
28	93632
29	106600
30	111506
31	120680
32	122073
33	138237
34	142116
35	147454

[11, 14, 224, 957, 1334, 1634, 2685, 9347, 13915, 16260, 20145, 20335, 33998, 37236, 42251, 42818, 51624, 55308, 56419, 56975, 71874, 74918, 77748, 79824, 79826, 79833, 84134, 93632, 106600, 111506, 120680, 122073, 138237, 142116, 147454]

cp's OEIS Frontend

A063964 Numbers k such that k and k+1 have the same sum of squarefree divisors, or sqf(k) = sqf(k+1), where sqf(k) = A048250(k).

Table of values

List of values