A025537 - cp's OEIS frontend

A025537 a(n) = (1/s(1) + 1/s(2) + ... + 1/s(n+1)) * LCM{1, 2, ..., n}, where s(k) = LCM{1,2,...,k}/k = A002944(k).

n	a(n)
0	1
1	2
2	5
3	17
4	35
5	181
6	182
7	1278
8	2559
9	7687
10	7688
11	84580
12	84581
13	1099567
14	1099582
15	1099590
16	2199181
17	37386095
18	37386096
19	710335844
20	710335865
21	710335887
22	710335888
23	16337725448
24	16337725453
25	81688627291
26	81688627300
27	245065881928
28	245065881929

[1, 2, 5, 17, 35, 181, 182, 1278, 2559, 7687, 7688, 84580, 84581, 1099567, 1099582, 1099590, 2199181, 37386095, 37386096, 710335844, 710335865, 710335887, 710335888, 16337725448, 16337725453, 81688627291, 81688627300, 245065881928, 245065881929]

cp's OEIS Frontend

A025537 a(n) = (1/s(1) + 1/s(2) + ... + 1/s(n+1)) * LCM{1, 2, ..., n}, where s(k) = LCM{1,2,...,k}/k = A002944(k).

Table of values

List of values