A332010 - cp's OEIS frontend

A332010 Irregular triangle of denominators of the average value of the first letter over all derangements of {1, 2, ..., n} with k descents.

n	a(n)
2	1
3	2
4	4
5	1
6	1
7	8
8	3
9	4
10	16
11	104
12	40
13	24
14	1
15	32
16	392
17	896
18	480
19	54
20	64
21	152
22	308
23	1496
24	63
25	108
26	1
27	128
28	2276
29	30384
30	14410
31	4315
32	3024
33	14
34	256
35	7340
36	153400
37	235252
38	24766
39	180416
40	4984
41	448
42	1
43	512
44	23172
45	365520
46	1713160
47	5794944
48	3739512
49	881152
50	63840
51	453

[1, 2, 4, 1, 1, 8, 3, 4, 16, 104, 40, 24, 1, 32, 392, 896, 480, 54, 64, 152, 308, 1496, 63, 108, 1, 128, 2276, 30384, 14410, 4315, 3024, 14, 256, 7340, 153400, 235252, 24766, 180416, 4984, 448, 1, 512, 23172, 365520, 1713160, 5794944, 3739512, 881152, 63840, 453]

cp's OEIS Frontend

A332010 Irregular triangle of denominators of the average value of the first letter over all derangements of {1, 2, ..., n} with k descents.

Table of values

List of values