A055267 - cp's OEIS frontend

A055267 a(n) = 3*a(n-1) - a(n-2) with a(0)=1, a(1)=7.

n	a(n)
0	1
1	7
2	20
3	53
4	139
5	364
6	953
7	2495
8	6532
9	17101
10	44771
11	117212
12	306865
13	803383
14	2103284
15	5506469
16	14416123
17	37741900
18	98809577
19	258686831
20	677250916
21	1773065917
22	4641946835
23	12152774588
24	31816376929
25	83296356199
26	218072691668
27	570921718805
28	1494692464747

[1, 7, 20, 53, 139, 364, 953, 2495, 6532, 17101, 44771, 117212, 306865, 803383, 2103284, 5506469, 14416123, 37741900, 98809577, 258686831, 677250916, 1773065917, 4641946835, 12152774588, 31816376929, 83296356199, 218072691668, 570921718805, 1494692464747]

cp's OEIS Frontend

A055267 a(n) = 3*a(n-1) - a(n-2) with a(0)=1, a(1)=7.

Table of values

List of values