A286760 - cp's OEIS frontend

A286760 Total number of nodes summed over all lattice paths from (0,0) to (n,0) that do not go below the x-axis or above the diagonal x=y and consist of steps U=(1,1), D=(1,-1), H=(1,0) and S=(0,1).

n	a(n)
0	1
1	2
2	10
3	42
4	214
5	1098
6	5978
7	33190
8	189078
9	1093490
10	6414714
11	38027030
12	227489950
13	1370980490
14	8314674202
15	50696630838
16	310541818382
17	1909850054666
18	11786947172234
19	72969941803662
20	452976340653030
21	2818815920369754
22	17579546535174946
23	109850944544149134

[1, 2, 10, 42, 214, 1098, 5978, 33190, 189078, 1093490, 6414714, 38027030, 227489950, 1370980490, 8314674202, 50696630838, 310541818382, 1909850054666, 11786947172234, 72969941803662, 452976340653030, 2818815920369754, 17579546535174946, 109850944544149134]

cp's OEIS Frontend

A286760 Total number of nodes summed over all lattice paths from (0,0) to (n,0) that do not go below the x-axis or above the diagonal x=y and consist of steps U=(1,1), D=(1,-1), H=(1,0) and S=(0,1).

Table of values

List of values