A062106 - cp's OEIS frontend

A062106 Number of ways a black pawn (from any starting square on the second back rank) can (theoretically) end on the n-th square of the leftmost file counted from the back rank.

n	a(n)
1	0
2	1
3	2
4	6
5	15
6	40
7	109
8	302
9	846
10	2390
11	6796
12	19426
13	55767
14	160668
15	464305
16	1345282
17	3906701
18	11367696
19	33135987
20	96740610
21	282831981
22	827939880
23	2426431239
24	7118546874
25	20904025380
26	61439768166
27	180725813478
28	532004277518

[0, 1, 2, 6, 15, 40, 109, 302, 846, 2390, 6796, 19426, 55767, 160668, 464305, 1345282, 3906701, 11367696, 33135987, 96740610, 282831981, 827939880, 2426431239, 7118546874, 20904025380, 61439768166, 180725813478, 532004277518]

cp's OEIS Frontend

A062106 Number of ways a black pawn (from any starting square on the second back rank) can (theoretically) end on the n-th square of the leftmost file counted from the back rank.

Table of values

List of values