A357570 - cp's OEIS frontend

A357570 a(n) = Sum_{k=0..floor(n/5)} (n-4k)!/(n-5k)!.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	3
7	4
8	5
9	6
10	9
11	14
12	21
13	30
14	41
15	60
16	93
17	146
18	225
19	336
20	509
21	798
22	1281
23	2060
24	3261
25	5154
26	8273
27	13536
28	22365
29	36806
30	60369
31	99588
32	166301
33	280650
34	474801
35	802424
36	1358973
37	2317806
38	3987185
39	6893196
40	11933949
41	20690738
42	36022161
43	63107520
44	111146141
45	196322454
46	347412753

[1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 9, 14, 21, 30, 41, 60, 93, 146, 225, 336, 509, 798, 1281, 2060, 3261, 5154, 8273, 13536, 22365, 36806, 60369, 99588, 166301, 280650, 474801, 802424, 1358973, 2317806, 3987185, 6893196, 11933949, 20690738, 36022161, 63107520, 111146141, 196322454, 347412753]

cp's OEIS Frontend

A357570 a(n) = Sum_{k=0..floor(n/5)} (n-4k)!/(n-5k)!.

Table of values

List of values

cp's OEIS Frontend

A357570 a(n) = Sum_{k=0..floor(n/5)} (n-4*k)!/(n-5*k)!.

Table of values

List of values

A357570 a(n) = Sum_{k=0..floor(n/5)} (n-4k)!/(n-5k)!.