A071943 - cp's OEIS frontend

A071943 Triangle T(n,k) (n>=0, 0 <= k <= n) read by rows giving number of underdiagonal lattice paths from (0,0) to (n,k) using only steps R=(1,0), V=(0,1) and D=(1,2).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	3
6	1
7	3
8	7
9	9
10	1
11	4
12	12
13	24
14	31
15	1
16	5
17	18
18	46
19	89
20	113
21	1
22	6
23	25
24	76
25	183
26	342
27	431
28	1
29	7
30	33
31	115
32	323
33	741
34	1355
35	1697
36	1
37	8
38	42
39	164
40	520
41	1376
42	3054
43	5492
44	6847
45	1
46	9
47	52
48	224
49	786
50	2326
51	5900
52	12768
53	22669
54	28161
55	1
56	10
57	63
58	296
59	1134
60	3684
61	10370

[1, 1, 1, 1, 2, 3, 1, 3, 7, 9, 1, 4, 12, 24, 31, 1, 5, 18, 46, 89, 113, 1, 6, 25, 76, 183, 342, 431, 1, 7, 33, 115, 323, 741, 1355, 1697, 1, 8, 42, 164, 520, 1376, 3054, 5492, 6847, 1, 9, 52, 224, 786, 2326, 5900, 12768, 22669, 28161, 1, 10, 63, 296, 1134, 3684, 10370]

cp's OEIS Frontend

A071943 Triangle T(n,k) (n>=0, 0 <= k <= n) read by rows giving number of underdiagonal lattice paths from (0,0) to (n,k) using only steps R=(1,0), V=(0,1) and D=(1,2).

Table of values

List of values