A374259 - cp's OEIS frontend

A374259 a(n) = 2a(n-1) + 2a(n-2) - a(n-3), with a(0)=4, a(1)=6, a(2)=20.

n	a(n)
0	4
1	6
2	20
3	48
4	130
5	336
6	884
7	2310
8	6052
9	15840
10	41474
11	108576
12	284260
13	744198
14	1948340
15	5100816
16	13354114
17	34961520
18	91530452
19	239629830
20	627359044
21	1642447296
22	4299982850
23	11257501248
24	29472520900
25	77160061446
26	202007663444
27	528862928880
28	1384581123202
29	3624880440720
30	9490060198964

[4, 6, 20, 48, 130, 336, 884, 2310, 6052, 15840, 41474, 108576, 284260, 744198, 1948340, 5100816, 13354114, 34961520, 91530452, 239629830, 627359044, 1642447296, 4299982850, 11257501248, 29472520900, 77160061446, 202007663444, 528862928880, 1384581123202, 3624880440720, 9490060198964]

cp's OEIS Frontend

A374259 a(n) = 2a(n-1) + 2a(n-2) - a(n-3), with a(0)=4, a(1)=6, a(2)=20.

Table of values

List of values

cp's OEIS Frontend

A374259 a(n) = 2*a(n-1) + 2*a(n-2) - a(n-3), with a(0)=4, a(1)=6, a(2)=20.

Table of values

List of values

A374259 a(n) = 2a(n-1) + 2a(n-2) - a(n-3), with a(0)=4, a(1)=6, a(2)=20.