A296050 - cp's OEIS frontend

A296050 Number of permutations p of [n] such that min_{j=1..n} |p(j)-j| = 1.

n	a(n)
0	0
1	0
2	1
3	2
4	8
5	40
6	236
7	1648
8	13125
9	117794
10	1175224
11	12903874
12	154615096
13	2007498192
14	28075470833
15	420753819282
16	6726830163592
17	114278495205524
18	2055782983578788
19	39039148388975552
20	780412763620655061
21	16381683795665956242
22	360258256118419518680
23	8283042472303599966974

[0, 0, 1, 2, 8, 40, 236, 1648, 13125, 117794, 1175224, 12903874, 154615096, 2007498192, 28075470833, 420753819282, 6726830163592, 114278495205524, 2055782983578788, 39039148388975552, 780412763620655061, 16381683795665956242, 360258256118419518680, 8283042472303599966974]

cp's OEIS Frontend

A296050 Number of permutations p of [n] such that min_{j=1..n} |p(j)-j| = 1.

Table of values

List of values