A248784 - cp's OEIS frontend

A248784 Number of squares that divide 1!2!3!...n!.

n	a(n)
1	1
2	1
3	2
4	6
5	10
6	42
7	72
8	360
9	672
10	2160
11	3960
12	19488
13	30464
14	177840
15	356400
16	1201200
17	2096640
18	10967040
19	17510400
20	121176000
21	193564800
22	783455904
23	1324670976
24	8010737280
25	13121514000
26	50323046400
27	88690140000
28	274271961600
29	444141105408
30	2312335872000

[1, 1, 2, 6, 10, 42, 72, 360, 672, 2160, 3960, 19488, 30464, 177840, 356400, 1201200, 2096640, 10967040, 17510400, 121176000, 193564800, 783455904, 1324670976, 8010737280, 13121514000, 50323046400, 88690140000, 274271961600, 444141105408, 2312335872000]

cp's OEIS Frontend

A248784 Number of squares that divide 1!2!3!...n!.

Table of values

List of values

cp's OEIS Frontend

A248784 Number of squares that divide 1!*2!*3!*...*n!.

Table of values

List of values

A248784 Number of squares that divide 1!2!3!...n!.