A070314 - cp's OEIS frontend

A070314 a(n) = P(n!+1)-P(2^n+1) where P(x) is the largest prime factor in x.

n	a(n)
0	0
1	-1
2	-2
3	4
4	-12
5	0
6	90
7	28
8	404
9	250
10	329850
11	39916118
12	2834088
13	75021616
14	3790360374
15	46271010
16	993974
17	956666
18	123610842
19	1713311273189068
20	117876621366
21	2703875810364
22	93799610095767534
23	148139754734068388
24	765041185860961083618
25	38681321803817920155550

[0, -1, -2, 4, -12, 0, 90, 28, 404, 250, 329850, 39916118, 2834088, 75021616, 3790360374, 46271010, 993974, 956666, 123610842, 1713311273189068, 117876621366, 2703875810364, 93799610095767534, 148139754734068388, 765041185860961083618, 38681321803817920155550]

cp's OEIS Frontend

A070314 a(n) = P(n!+1)-P(2^n+1) where P(x) is the largest prime factor in x.

Table of values

List of values