A376837 - cp's OEIS frontend

A376837 a(n) is the number of paths to reach a position outside an 8 X 8 chessboard after n steps, starting in one of the corners, when performing a walk with unit steps on the square lattice.

n	a(n)
1	2
2	2
3	6
4	12
5	40
6	100
7	350
8	982
9	3542
10	10738
11	39556
12	127272
13	475332
14	1602458
15	6030830
16	21056830
17	79514918
18	284645860
19	1075801928
20	3917238476
21	14799350958
22	54498514998
23	205721183302
24	763140403282
25	2878050335900
26	10726898070952
27	40421307665420
28	151112554663930
29	569043610134622
30	2131459901180670

[2, 2, 6, 12, 40, 100, 350, 982, 3542, 10738, 39556, 127272, 475332, 1602458, 6030830, 21056830, 79514918, 284645860, 1075801928, 3917238476, 14799350958, 54498514998, 205721183302, 763140403282, 2878050335900, 10726898070952, 40421307665420, 151112554663930, 569043610134622, 2131459901180670]

cp's OEIS Frontend

A376837 a(n) is the number of paths to reach a position outside an 8 X 8 chessboard after n steps, starting in one of the corners, when performing a walk with unit steps on the square lattice.

Table of values

List of values