A357532 - cp's OEIS frontend

A357532 a(n) = Sum_{k=0..floor(n/3)} (n-2k)!/(n-3k)!.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	7
7	12
8	19
9	34
10	63
11	112
12	211
13	414
14	799
15	1588
16	3267
17	6706
18	13999
19	30024
20	64723
21	141142
22	314271
23	705724
24	1599619
25	3685338
26	8573167
27	20112016
28	47804499
29	114743614
30	277615903
31	679057092
32	1676636611
33	4171532674
34	10477002159
35	26545428568
36	67755344467
37	174386589606

[1, 1, 1, 2, 3, 4, 7, 12, 19, 34, 63, 112, 211, 414, 799, 1588, 3267, 6706, 13999, 30024, 64723, 141142, 314271, 705724, 1599619, 3685338, 8573167, 20112016, 47804499, 114743614, 277615903, 679057092, 1676636611, 4171532674, 10477002159, 26545428568, 67755344467, 174386589606]

cp's OEIS Frontend

A357532 a(n) = Sum_{k=0..floor(n/3)} (n-2k)!/(n-3k)!.

Table of values

List of values

cp's OEIS Frontend

A357532 a(n) = Sum_{k=0..floor(n/3)} (n-2*k)!/(n-3*k)!.

Table of values

List of values

A357532 a(n) = Sum_{k=0..floor(n/3)} (n-2k)!/(n-3k)!.