A249039 - cp's OEIS frontend

A249039 a(1)=1, a(2)=2; thereafter a(n) = a(n-1) + a(n-1-(number of even terms so far)) + a(n-1-(number of odd terms so far)).

n	a(n)
1	1
2	2
3	4
4	7
5	11
6	17
7	26
8	37
9	52
10	70
11	92
12	120
13	157
14	200
15	254
16	323
17	401
18	490
19	597
20	719
21	859
22	1021
23	1211
24	1438
25	1687
26	1979
27	2325
28	2740
29	3183
30	3704
31	4262
32	4863
33	5553
34	6350
35	7201
36	8174
37	9216
38	10336
39	11545
40	12894
41	14350
42	15928
43	17646
44	19526
45	21596
46	23893
47	26352
48	29060
49	32060
50	35406
51	39167

[1, 2, 4, 7, 11, 17, 26, 37, 52, 70, 92, 120, 157, 200, 254, 323, 401, 490, 597, 719, 859, 1021, 1211, 1438, 1687, 1979, 2325, 2740, 3183, 3704, 4262, 4863, 5553, 6350, 7201, 8174, 9216, 10336, 11545, 12894, 14350, 15928, 17646, 19526, 21596, 23893, 26352, 29060, 32060, 35406, 39167]

cp's OEIS Frontend

A249039 a(1)=1, a(2)=2; thereafter a(n) = a(n-1) + a(n-1-(number of even terms so far)) + a(n-1-(number of odd terms so far)).

Table of values

List of values