A320252 - cp's OEIS frontend

A320252 Numbers with prime factorization Product_{k=1..w} prime(i_k) ^ e_k (where w = A001221(n) and prime(i) denotes the i-th prime number) such that i_k <> e_k for k = 1..w and { i_1, ..., i_w } = { e_1, ..., e_w }.

n	a(n)
1	1
2	12
3	40
4	112
5	352
6	540
7	600
8	675
9	832
10	2176
11	2268
12	2352
13	3969
14	4864
15	10692
16	11616
17	11776
18	27440
19	29403
20	29696
21	32448
22	35000
23	37908
24	63488
25	75600
26	105840
27	110976
28	113400
29	123201
30	148716
31	151552
32	158760
33	212960
34	214375
35	237600
36	275000
37	277248
38	335872
39	411600

[1, 12, 40, 112, 352, 540, 600, 675, 832, 2176, 2268, 2352, 3969, 4864, 10692, 11616, 11776, 27440, 29403, 29696, 32448, 35000, 37908, 63488, 75600, 105840, 110976, 113400, 123201, 148716, 151552, 158760, 212960, 214375, 237600, 275000, 277248, 335872, 411600]

cp's OEIS Frontend

A320252 Numbers with prime factorization Product_{k=1..w} prime(i_k) ^ e_k (where w = A001221(n) and prime(i) denotes the i-th prime number) such that i_k <> e_k for k = 1..w and { i_1, ..., i_w } = { e_1, ..., e_w }.

Table of values

List of values