A112100 - cp's OEIS frontend

A112100 Denominator of Sum_{i=1..n} 1/(iC(2i,i)).

n	a(n)
0	1
1	2
2	12
3	5
4	280
5	2520
6	220
7	120120
8	144144
9	1361360
10	25865840
11	77597520
12	22881320
13	371821450
14	11473347600
15	9242418900
16	6876359661600
17	20629078984800
18	281488407200
19	118731810156960
20	254425307479200
21	8113340360725600
22	36090376087365600
23	9419588158802421600

[1, 2, 12, 5, 280, 2520, 220, 120120, 144144, 1361360, 25865840, 77597520, 22881320, 371821450, 11473347600, 9242418900, 6876359661600, 20629078984800, 281488407200, 118731810156960, 254425307479200, 8113340360725600, 36090376087365600, 9419588158802421600]

cp's OEIS Frontend

A112100 Denominator of Sum_{i=1..n} 1/(iC(2i,i)).

Table of values

List of values

cp's OEIS Frontend

A112100 Denominator of Sum_{i=1..n} 1/(i*C(2*i,i)).

Table of values

List of values

A112100 Denominator of Sum_{i=1..n} 1/(iC(2i,i)).