A029848 - cp's OEIS frontend

A029848 a(n) = 1 + C(2n,n) + C(3n,n).

n	a(n)
0	3
1	6
2	22
3	105
4	566
5	3256
6	19489
7	119713
8	748342
9	4735446
10	30229772
11	194242153
12	1254381857
13	8132826045
14	52900345681
15	345022543105
16	2255449994038
17	14773402692946
18	96935423713906
19	637019314585501
20	4191982352334316
21	27619973660237476
22	182185272080724121
23	1202945209263916561

[3, 6, 22, 105, 566, 3256, 19489, 119713, 748342, 4735446, 30229772, 194242153, 1254381857, 8132826045, 52900345681, 345022543105, 2255449994038, 14773402692946, 96935423713906, 637019314585501, 4191982352334316, 27619973660237476, 182185272080724121, 1202945209263916561]

cp's OEIS Frontend

A029848 a(n) = 1 + C(2n,n) + C(3n,n).

Table of values

List of values

cp's OEIS Frontend

A029848 a(n) = 1 + C(2*n,n) + C(3*n,n).

Table of values

List of values

A029848 a(n) = 1 + C(2n,n) + C(3n,n).