A340516 - cp's OEIS frontend

A340516 Let p_i (i=1..m) denote the primes <= n, and let e_i be the maximum number such that p_i^e_i <= n; then a(n) = Product_{i=1..m} p_i^(2*e_i-1).

n	a(n)
1	1
2	2
3	6
4	24
5	120
6	120
7	840
8	3360
9	30240
10	30240
11	332640
12	332640
13	4324320
14	4324320
15	4324320
16	17297280
17	294053760
18	294053760
19	5587021440
20	5587021440
21	5587021440
22	5587021440
23	128501493120
24	128501493120
25	3212537328000
26	3212537328000
27	28912835952000
28	28912835952000
29	838472242608000

[1, 2, 6, 24, 120, 120, 840, 3360, 30240, 30240, 332640, 332640, 4324320, 4324320, 4324320, 17297280, 294053760, 294053760, 5587021440, 5587021440, 5587021440, 5587021440, 128501493120, 128501493120, 3212537328000, 3212537328000, 28912835952000, 28912835952000, 838472242608000]

cp's OEIS Frontend

A340516 Let p_i (i=1..m) denote the primes <= n, and let e_i be the maximum number such that p_i^e_i <= n; then a(n) = Product_{i=1..m} p_i^(2*e_i-1).

Table of values

List of values