A093880 - cp's OEIS frontend

A093880 a(n) = lcm(1, 2, ..., 2n) / lcm(1, 2, ..., n).

n	a(n)
1	2
2	6
3	10
4	70
5	42
6	462
7	858
8	858
9	4862
10	92378
11	8398
12	193154
13	74290
14	222870
15	6463230
16	200360130
17	11785890
18	11785890
19	22951470
20	22951470
21	941010270
22	40463441610
23	1759280070
24	82686163290
25	115760628606
26	115760628606
27	2045104438706

[2, 6, 10, 70, 42, 462, 858, 858, 4862, 92378, 8398, 193154, 74290, 222870, 6463230, 200360130, 11785890, 11785890, 22951470, 22951470, 941010270, 40463441610, 1759280070, 82686163290, 115760628606, 115760628606, 2045104438706]

cp's OEIS Frontend

A093880 a(n) = lcm(1, 2, ..., 2n) / lcm(1, 2, ..., n).

Table of values

List of values