A080003 - cp's OEIS frontend

A080003 Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={1,2}.

n	a(n)
0	1
1	1
2	1
3	1
4	4
5	8
6	13
7	22
8	40
9	77
10	140
11	252
12	456
13	834
14	1525
15	2775
16	5049
17	9195
18	16760
19	30536
20	55617
21	101304
22	184544
23	336193
24	612424
25	1115600
26	2032216
27	3702000
28	6743761
29	12284729
30	22378393
31	40765513
32	74260396
33	135276192
34	246425309

[1, 1, 1, 1, 4, 8, 13, 22, 40, 77, 140, 252, 456, 834, 1525, 2775, 5049, 9195, 16760, 30536, 55617, 101304, 184544, 336193, 612424, 1115600, 2032216, 3702000, 6743761, 12284729, 22378393, 40765513, 74260396, 135276192, 246425309]

cp's OEIS Frontend

A080003 Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={1,2}.

Table of values

List of values