A055269 - cp's OEIS frontend

A055269 a(n) = 4*a(n-1) - a(n-2) + 3 with a(0)=1, a(1)=7.

n	a(n)
0	1
1	7
2	30
3	116
4	437
5	1635
6	6106
7	22792
8	85065
9	317471
10	1184822
11	4421820
12	16502461
13	61588027
14	229849650
15	857810576
16	3201392657
17	11947760055
18	44589647566
19	166410830212
20	621053673285
21	2317803862931
22	8650161778442
23	32282843250840
24	120481211224921
25	449642001648847

[1, 7, 30, 116, 437, 1635, 6106, 22792, 85065, 317471, 1184822, 4421820, 16502461, 61588027, 229849650, 857810576, 3201392657, 11947760055, 44589647566, 166410830212, 621053673285, 2317803862931, 8650161778442, 32282843250840, 120481211224921, 449642001648847]

cp's OEIS Frontend

A055269 a(n) = 4*a(n-1) - a(n-2) + 3 with a(0)=1, a(1)=7.

Table of values

List of values