A215143 - cp's OEIS frontend

A215143 a(n) = 7a(n-1) -14a(n-2) +7*a(n-3), with a(0)=1, a(1)=2, a(2)=7.

n	a(n)
0	1
1	2
2	7
3	28
4	112
5	441
6	1715
7	6615
8	25382
9	97069
10	370440
11	1411788
12	5375839
13	20458921
14	77833217
15	296038498
16	1125816895
17	4281011812
18	16277915640
19	61891962377
20	235320000363
21	894697938743
22	3401649302758
23	12933013979445
24	49170893188704
25	186945601728004
26	710757805310287

[1, 2, 7, 28, 112, 441, 1715, 6615, 25382, 97069, 370440, 1411788, 5375839, 20458921, 77833217, 296038498, 1125816895, 4281011812, 16277915640, 61891962377, 235320000363, 894697938743, 3401649302758, 12933013979445, 49170893188704, 186945601728004, 710757805310287]

cp's OEIS Frontend

A215143 a(n) = 7a(n-1) -14a(n-2) +7*a(n-3), with a(0)=1, a(1)=2, a(2)=7.

Table of values

List of values

cp's OEIS Frontend

A215143 a(n) = 7*a(n-1) -14*a(n-2) +7*a(n-3), with a(0)=1, a(1)=2, a(2)=7.

Table of values

List of values

A215143 a(n) = 7a(n-1) -14a(n-2) +7*a(n-3), with a(0)=1, a(1)=2, a(2)=7.