A144097 - cp's OEIS frontend

A144097 The 4-Schroeder numbers: a(n) = number of lattice paths (Schroeder paths) from (0,0) to (3n,n) with unit steps N=(0,1), E=(1,0) and D=(1,1) staying weakly above the line y = 3x.

n	a(n)
0	1
1	2
2	14
3	134
4	1482
5	17818
6	226214
7	2984206
8	40503890
9	561957362
10	7934063678
11	113622696470
12	1646501710362
13	24098174350986
14	355715715691350
15	5289547733908510
16	79163575684710818
17	1191491384838325474

[1, 2, 14, 134, 1482, 17818, 226214, 2984206, 40503890, 561957362, 7934063678, 113622696470, 1646501710362, 24098174350986, 355715715691350, 5289547733908510, 79163575684710818, 1191491384838325474]

cp's OEIS Frontend

A144097 The 4-Schroeder numbers: a(n) = number of lattice paths (Schroeder paths) from (0,0) to (3n,n) with unit steps N=(0,1), E=(1,0) and D=(1,1) staying weakly above the line y = 3x.

Table of values

List of values