A352879 - cp's OEIS frontend

A352879 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n,3k+1) a(k).

n	a(n)
0	1
1	1
2	2
3	3
4	5
5	10
6	21
7	44
8	94
9	207
10	463
11	1034
12	2289
13	5023
14	10952
15	23784
16	51550
17	111707
18	242370
19	527176
20	1150643
21	2522064
22	5553977
23	12290257
24	27326784
25	61031999
26	136860175
27	307979631
28	695115874
29	1572737222
30	3565447689
31	8095730133
32	18405209484

[1, 1, 2, 3, 5, 10, 21, 44, 94, 207, 463, 1034, 2289, 5023, 10952, 23784, 51550, 111707, 242370, 527176, 1150643, 2522064, 5553977, 12290257, 27326784, 61031999, 136860175, 307979631, 695115874, 1572737222, 3565447689, 8095730133, 18405209484]

cp's OEIS Frontend

A352879 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n,3k+1) a(k).

Table of values

List of values

cp's OEIS Frontend

A352879 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n,3*k+1) * a(k).

Table of values

List of values

A352879 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n,3k+1) a(k).