A080006 - cp's OEIS frontend

A080006 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={0,2}.

n	a(n)
0	1
1	0
2	1
3	1
4	3
5	5
6	8
7	16
8	27
9	51
10	91
11	164
12	298
13	536
14	972
15	1755
16	3172
17	5735
18	10363
19	18735
20	33861
21	61204
22	110628
23	199957
24	361427
25	653277
26	1180800
27	2134300
28	3857748
29	6972892
30	12603513
31	22780876
32	41176481
33	74426569
34	134526179
35	243156337

[1, 0, 1, 1, 3, 5, 8, 16, 27, 51, 91, 164, 298, 536, 972, 1755, 3172, 5735, 10363, 18735, 33861, 61204, 110628, 199957, 361427, 653277, 1180800, 2134300, 3857748, 6972892, 12603513, 22780876, 41176481, 74426569, 134526179, 243156337]

cp's OEIS Frontend

A080006 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={0,2}.

Table of values

List of values