A071945 - cp's OEIS frontend

A071945 Triangle T(n,k) read by rows giving number of underdiagonal lattice paths from (0,0) to (n,k) using steps R=(1,0), V=(0,1) and D=(2,1).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	3
6	1
7	5
8	9
9	9
10	1
11	7
12	19
13	31
14	31
15	1
16	9
17	33
18	73
19	113
20	113
21	1
22	11
23	51
24	143
25	287
26	431
27	431
28	1
29	13
30	73
31	249
32	609
33	1153
34	1697
35	1697
36	1
37	15
38	99
39	399
40	1151
41	2591
42	4719
43	6847
44	6847
45	1
46	17
47	129
48	601
49	2001
50	5201
51	11073
52	19617
53	28161
54	28161
55	1
56	19
57	163
58	863
59	3263

[1, 1, 1, 1, 3, 3, 1, 5, 9, 9, 1, 7, 19, 31, 31, 1, 9, 33, 73, 113, 113, 1, 11, 51, 143, 287, 431, 431, 1, 13, 73, 249, 609, 1153, 1697, 1697, 1, 15, 99, 399, 1151, 2591, 4719, 6847, 6847, 1, 17, 129, 601, 2001, 5201, 11073, 19617, 28161, 28161, 1, 19, 163, 863, 3263]

cp's OEIS Frontend

A071945 Triangle T(n,k) read by rows giving number of underdiagonal lattice paths from (0,0) to (n,k) using steps R=(1,0), V=(0,1) and D=(2,1).

Table of values

List of values