A005593 - cp's OEIS frontend

A005593 a(n) = (F(2n+1) + F(2n-1) + F(n+3) - 2)/2, where F() = Fibonacci numbers A000045.

n	a(n)
1	2
2	5
3	12
4	29
5	71
6	177
7	448
8	1147
9	2960
10	7679
11	19989
12	52145
13	136214
14	356121
15	931540
16	2437513
17	6379403
18	16698113
19	43710756
20	114427391
21	299560472
22	784236315
23	2053119817
24	5375076769
25	14072035466
26	36840908237
27	96450492828
28	252510252437

[2, 5, 12, 29, 71, 177, 448, 1147, 2960, 7679, 19989, 52145, 136214, 356121, 931540, 2437513, 6379403, 16698113, 43710756, 114427391, 299560472, 784236315, 2053119817, 5375076769, 14072035466, 36840908237, 96450492828, 252510252437]

cp's OEIS Frontend

A005593 a(n) = (F(2n+1) + F(2n-1) + F(n+3) - 2)/2, where F() = Fibonacci numbers A000045.

Table of values

List of values