A110121 - cp's OEIS frontend

A110121 Triangle read by rows: T(n,k) (0 <= k <= floor(n/2)) is the number of Delannoy paths of length n, having k EE's crossing the line y = x (i.e., two consecutive E steps from the line y = x+1 to the line y = x-1).

n	a(n)
0	1
1	3
2	12
3	1
4	53
5	10
6	247
7	73
8	1
9	1192
10	474
11	17
12	5897
13	2908
14	183
15	1
16	29723
17	17290
18	1602
19	24
20	152020
21	100891
22	12475
23	342
24	1
25	786733
26	581814
27	90205
28	3780
29	31
30	4111295
31	3329507
32	620243
33	35857
34	550
35	1
36	21661168
37	18956564
38	4114406
39	307192
40	7351
41	38

[1, 3, 12, 1, 53, 10, 247, 73, 1, 1192, 474, 17, 5897, 2908, 183, 1, 29723, 17290, 1602, 24, 152020, 100891, 12475, 342, 1, 786733, 581814, 90205, 3780, 31, 4111295, 3329507, 620243, 35857, 550, 1, 21661168, 18956564, 4114406, 307192, 7351, 38]

cp's OEIS Frontend

A110121 Triangle read by rows: T(n,k) (0 <= k <= floor(n/2)) is the number of Delannoy paths of length n, having k EE's crossing the line y = x (i.e., two consecutive E steps from the line y = x+1 to the line y = x-1).

Table of values

List of values