A046572 - cp's OEIS frontend

A046572 First numerator and then denominator of the central elements of the 1/4-Pascal triangle (by row).

n	a(n)
1	1
2	1
3	1
4	4
5	5
6	2
7	19
8	2
9	35
10	1
11	259
12	2
13	483
14	1
15	1815
16	1
17	6864
18	1
19	52195
20	2
21	99671
22	1
23	382109
24	1
25	1469650
26	1
27	5668327
28	1
29	21915550
30	1
31	84913470
32	1
33	329624730
34	1
35	2563431075
36	2
37	4991324415
38	1
39	19463777025
40	1
41	75992317170
42	1
43	297026449005
44	1

[1, 1, 1, 4, 5, 2, 19, 2, 35, 1, 259, 2, 483, 1, 1815, 1, 6864, 1, 52195, 2, 99671, 1, 382109, 1, 1469650, 1, 5668327, 1, 21915550, 1, 84913470, 1, 329624730, 1, 2563431075, 2, 4991324415, 1, 19463777025, 1, 75992317170, 1, 297026449005, 1]

cp's OEIS Frontend

A046572 First numerator and then denominator of the central elements of the 1/4-Pascal triangle (by row).

Table of values

List of values