A213998 - cp's OEIS frontend

A213998 Numerators of the triangle of fractions read by rows: pf(n,0) = 1, pf(n,n) = 1/(n+1) and pf(n+1,k) = pf(n,k) + pf(n,k-1) with 0 < k < n.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	1
6	1
7	5
8	11
9	1
10	1
11	7
12	13
13	25
14	1
15	1
16	9
17	47
18	77
19	137
20	1
21	1
22	11
23	37
24	57
25	87
26	49
27	1
28	1
29	13
30	107
31	319
32	459
33	223
34	363
35	1
36	1
37	15
38	73
39	533
40	743
41	341
42	481
43	761
44	1
45	1
46	17
47	191
48	275
49	1879
50	2509
51	3349
52	4609
53	7129
54	1
55	1
56	19
57	121
58	1207
59	1627
60	2131
61	2761
62	3601
63	4861
64	7381
65	1

[1, 1, 1, 1, 3, 1, 1, 5, 11, 1, 1, 7, 13, 25, 1, 1, 9, 47, 77, 137, 1, 1, 11, 37, 57, 87, 49, 1, 1, 13, 107, 319, 459, 223, 363, 1, 1, 15, 73, 533, 743, 341, 481, 761, 1, 1, 17, 191, 275, 1879, 2509, 3349, 4609, 7129, 1, 1, 19, 121, 1207, 1627, 2131, 2761, 3601, 4861, 7381, 1]

cp's OEIS Frontend

A213998 Numerators of the triangle of fractions read by rows: pf(n,0) = 1, pf(n,n) = 1/(n+1) and pf(n+1,k) = pf(n,k) + pf(n,k-1) with 0 < k < n.

Table of values

List of values