A336905 - cp's OEIS frontend

A336905 Numbers n such that for any i > 0 there is some j > 0 such that the prime(i)-adic valuation of n, say x, equals the prime(j)-adic valuation of n and x = abs(i-j) (where prime(k) denotes the k-th prime number and the p-adic valuation of a number is the greatest m such that p^m divides that number).

n	a(n)
1	1
2	6
3	15
4	30
5	35
6	77
7	100
8	105
9	143
10	210
11	221
12	323
13	385
14	437
15	441
16	462
17	667
18	858
19	899
20	1001
21	1147
22	1155
23	1326
24	1517
25	1763
26	1938
27	2021
28	2145
29	2310
30	2431
31	2491
32	2622
33	2744
34	3025
35	3127
36	3315
37	3599
38	4002
39	4087
40	4199
41	4290
42	4757
43	4845
44	5005
45	5183
46	5394
47	5767
48	6006

[1, 6, 15, 30, 35, 77, 100, 105, 143, 210, 221, 323, 385, 437, 441, 462, 667, 858, 899, 1001, 1147, 1155, 1326, 1517, 1763, 1938, 2021, 2145, 2310, 2431, 2491, 2622, 2744, 3025, 3127, 3315, 3599, 4002, 4087, 4199, 4290, 4757, 4845, 5005, 5183, 5394, 5767, 6006]

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