A341240 - cp's OEIS frontend

A341240 a(n) = 4a(n-1) - 2a(n-2) + a(n-3) - 4a(n-4) + 2a(n-5) for n >= 7, where a(1) = 1, a(2) = 2, a(3) = 4, a(4) = 12, a(5) = 38, a(6) = 127.

n	a(n)
1	1
2	2
3	4
4	12
5	38
6	127
7	432
8	1472
9	5023
10	17148
11	58544
12	199879
13	682428
14	2329952
15	7954951
16	27159900
17	92729696
18	316598983
19	1080936540
20	3690548192
21	12600319687
22	43020182364
23	146880090080
24	501479995591
25	1712159802204
26	5845679217632
27	19958397266119
28	68142230629212

[1, 2, 4, 12, 38, 127, 432, 1472, 5023, 17148, 58544, 199879, 682428, 2329952, 7954951, 27159900, 92729696, 316598983, 1080936540, 3690548192, 12600319687, 43020182364, 146880090080, 501479995591, 1712159802204, 5845679217632, 19958397266119, 68142230629212]

cp's OEIS Frontend

A341240 a(n) = 4a(n-1) - 2a(n-2) + a(n-3) - 4a(n-4) + 2a(n-5) for n >= 7, where a(1) = 1, a(2) = 2, a(3) = 4, a(4) = 12, a(5) = 38, a(6) = 127.

Table of values

List of values

cp's OEIS Frontend

A341240 a(n) = 4*a(n-1) - 2*a(n-2) + a(n-3) - 4*a(n-4) + 2*a(n-5) for n >= 7, where a(1) = 1, a(2) = 2, a(3) = 4, a(4) = 12, a(5) = 38, a(6) = 127.

Table of values

List of values

A341240 a(n) = 4a(n-1) - 2a(n-2) + a(n-3) - 4a(n-4) + 2a(n-5) for n >= 7, where a(1) = 1, a(2) = 2, a(3) = 4, a(4) = 12, a(5) = 38, a(6) = 127.