A227656 - cp's OEIS frontend

A227656 Number of lattice paths from {2}^n to {0}^n using steps that decrement one component by 1 such that for each point (p_1,p_2,...,p_n) we have abs(p_{i}-p_{i+1}) <= 1.

n	a(n)
0	1
1	1
2	4
3	44
4	896
5	29392
6	1413792
7	93770800
8	8201380224
9	914570667792
10	126651310675680
11	21323599202141616
12	4289517397262212416
13	1016086393608958657680
14	279937626985917460931616
15	88754294249179769383418160
16	32085579878185717054048193280
17	13119328150439580260369558815248

[1, 1, 4, 44, 896, 29392, 1413792, 93770800, 8201380224, 914570667792, 126651310675680, 21323599202141616, 4289517397262212416, 1016086393608958657680, 279937626985917460931616, 88754294249179769383418160, 32085579878185717054048193280, 13119328150439580260369558815248]

cp's OEIS Frontend

A227656 Number of lattice paths from {2}^n to {0}^n using steps that decrement one component by 1 such that for each point (p_1,p_2,...,p_n) we have abs(p_{i}-p_{i+1}) <= 1.

Table of values

List of values