A025074 - cp's OEIS frontend

A025074 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = A001950 (upper Wythoff sequence).

n	a(n)
1	5
2	7
3	10
4	13
5	25
6	31
7	48
8	56
9	64
10	71
11	98
12	108
13	138
14	153
15	188
16	204
17	220
18	235
19	280
20	297
21	347
22	368
23	422
24	446
25	505
26	531
27	558
28	584
29	651
30	680
31	753
32	785
33	863
34	896
35	980
36	1017
37	1105
38	1144
39	1184
40	1224
41	1319
42	1362
43	1463
44	1507
45	1615
46	1661
47	1774
48	1824
49	1941
50	1993
51	2115
52	2170
53	2226

[5, 7, 10, 13, 25, 31, 48, 56, 64, 71, 98, 108, 138, 153, 188, 204, 220, 235, 280, 297, 347, 368, 422, 446, 505, 531, 558, 584, 651, 680, 753, 785, 863, 896, 980, 1017, 1105, 1144, 1184, 1224, 1319, 1362, 1463, 1507, 1615, 1661, 1774, 1824, 1941, 1993, 2115, 2170, 2226]

cp's OEIS Frontend

A025074 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = A001950 (upper Wythoff sequence).

Table of values

List of values