A137221 - cp's OEIS frontend

A137221 a(n) = 5a(n-1) - 9a(n-2) + 8a(n-3) - 4a(n-4), with a(0)=0, a(1)=0, a(2)=0, a(3)=1.

n	a(n)
0	0
1	0
2	0
3	1
4	5
5	16
6	43
7	107
8	256
9	597
10	1365
11	3072
12	6827
13	15019
14	32768
15	70997
16	152917
17	327680
18	699051
19	1485483
20	3145728
21	6640981
22	13981013
23	29360128
24	61516459
25	128625323
26	268435456
27	559240533
28	1163220309
29	2415919104
30	5010795179

[0, 0, 0, 1, 5, 16, 43, 107, 256, 597, 1365, 3072, 6827, 15019, 32768, 70997, 152917, 327680, 699051, 1485483, 3145728, 6640981, 13981013, 29360128, 61516459, 128625323, 268435456, 559240533, 1163220309, 2415919104, 5010795179]

cp's OEIS Frontend

A137221 a(n) = 5a(n-1) - 9a(n-2) + 8a(n-3) - 4a(n-4), with a(0)=0, a(1)=0, a(2)=0, a(3)=1.

Table of values

List of values

cp's OEIS Frontend

A137221 a(n) = 5*a(n-1) - 9*a(n-2) + 8*a(n-3) - 4*a(n-4), with a(0)=0, a(1)=0, a(2)=0, a(3)=1.

Table of values

List of values

A137221 a(n) = 5a(n-1) - 9a(n-2) + 8a(n-3) - 4a(n-4), with a(0)=0, a(1)=0, a(2)=0, a(3)=1.