A119248 - cp's OEIS frontend

A119248 a(n) is the difference between denominator and numerator of the n-th alternating harmonic number Sum_{k=1..n} (-1)^(k+1)/k = A058313(n)/A058312(n).

n	a(n)
1	0
2	1
3	1
4	5
5	13
6	23
7	101
8	307
9	641
10	893
11	7303
12	9613
13	97249
14	122989
15	19793
16	48595
17	681971
18	818107
19	13093585
20	77107553
21	66022193
22	76603673
23	1529091919
24	1752184789
25	7690078169
26	8719737569
27	23184641107
28	3721854001
29	96460418429

[0, 1, 1, 5, 13, 23, 101, 307, 641, 893, 7303, 9613, 97249, 122989, 19793, 48595, 681971, 818107, 13093585, 77107553, 66022193, 76603673, 1529091919, 1752184789, 7690078169, 8719737569, 23184641107, 3721854001, 96460418429]

cp's OEIS Frontend

A119248 a(n) is the difference between denominator and numerator of the n-th alternating harmonic number Sum_{k=1..n} (-1)^(k+1)/k = A058313(n)/A058312(n).

Table of values

List of values