A000285 - cp's OEIS frontend

A000285 a(0) = 1, a(1) = 4, and a(n) = a(n-1) + a(n-2) for n >= 2.

n	a(n)
0	1
1	4
2	5
3	9
4	14
5	23
6	37
7	60
8	97
9	157
10	254
11	411
12	665
13	1076
14	1741
15	2817
16	4558
17	7375
18	11933
19	19308
20	31241
21	50549
22	81790
23	132339
24	214129
25	346468
26	560597
27	907065
28	1467662
29	2374727
30	3842389
31	6217116
32	10059505
33	16276621
34	26336126
35	42612747
36	68948873
37	111561620
38	180510493
39	292072113
40	472582606

[1, 4, 5, 9, 14, 23, 37, 60, 97, 157, 254, 411, 665, 1076, 1741, 2817, 4558, 7375, 11933, 19308, 31241, 50549, 81790, 132339, 214129, 346468, 560597, 907065, 1467662, 2374727, 3842389, 6217116, 10059505, 16276621, 26336126, 42612747, 68948873, 111561620, 180510493, 292072113, 472582606]

cp's OEIS Frontend

A000285 a(0) = 1, a(1) = 4, and a(n) = a(n-1) + a(n-2) for n >= 2.

Table of values

List of values