A121811 - cp's OEIS frontend

A121811 a(n) is the floor of the first component of M^n * (0, 1, 2, 3) where M is the matrix [[c, 1/2, 1/2, 1/2], [1/2, c, 1/2, 1/2], [1/2, 1/2, c, 1/2], [1/2, 1/2, 1/2, c]] and c=sqrt(3)/2.

n	a(n)
1	0
2	3
3	8
4	19
5	46
6	111
7	263
8	622
9	1473
10	3485
11	8246
12	19512
13	46166
14	109230
15	258441
16	611480
17	1446777
18	3423112
19	8099170
20	19162842
21	45339771
22	107275050
23	253815495
24	600533909
25	1420878484
26	3361834590
27	7954186044
28	18819806248
29	44528139677
30	105354709660
31	249271919464
32	589783693902

[0, 3, 8, 19, 46, 111, 263, 622, 1473, 3485, 8246, 19512, 46166, 109230, 258441, 611480, 1446777, 3423112, 8099170, 19162842, 45339771, 107275050, 253815495, 600533909, 1420878484, 3361834590, 7954186044, 18819806248, 44528139677, 105354709660, 249271919464, 589783693902]

cp's OEIS Frontend

A121811 a(n) is the floor of the first component of M^n * (0, 1, 2, 3) where M is the matrix [[c, 1/2, 1/2, 1/2], [1/2, c, 1/2, 1/2], [1/2, 1/2, c, 1/2], [1/2, 1/2, 1/2, c]] and c=sqrt(3)/2.

Table of values

List of values