A337870 - cp's OEIS frontend

A337870 The number of random walks on the simple square lattice that start at the origin (0,0) and pass through (1,0) after 2n+1 steps before having returned to the origin.

n	a(n)
0	1
1	2
2	16
3	166
4	1934
5	24076
6	312906
7	4191822
8	57433950
9	800740450
10	11319707546
11	161841539812
12	2335765140994
13	33979681977530
14	497696233487200
15	7332776490675630
16	108595186409772174
17	1615573668169487898
18	24132221328987714066

[1, 2, 16, 166, 1934, 24076, 312906, 4191822, 57433950, 800740450, 11319707546, 161841539812, 2335765140994, 33979681977530, 497696233487200, 7332776490675630, 108595186409772174, 1615573668169487898, 24132221328987714066]

cp's OEIS Frontend

A337870 The number of random walks on the simple square lattice that start at the origin (0,0) and pass through (1,0) after 2n+1 steps before having returned to the origin.

Table of values

List of values