A023862 - cp's OEIS frontend

A023862 a(n) = 1t(n) + 2t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t = A008578 ({1} U primes).

n	a(n)
1	1
2	2
3	7
4	11
5	26
6	40
7	76
8	104
9	171
10	219
11	331
12	397
13	566
14	672
15	912
16	1046
17	1369
18	1561
19	1985
20	2223
21	2762
22	3026
23	3688
24	4030
25	4833
26	5215
27	6179
28	6631
29	7764
30	8318
31	9630
32	10270
33	11793
34	12499
35	14245
36	15019
37	17006
38	17930
39	20176
40	21182
41	23701
42	24837
43	27645
44	28965
45	32084
46	33504

[1, 2, 7, 11, 26, 40, 76, 104, 171, 219, 331, 397, 566, 672, 912, 1046, 1369, 1561, 1985, 2223, 2762, 3026, 3688, 4030, 4833, 5215, 6179, 6631, 7764, 8318, 9630, 10270, 11793, 12499, 14245, 15019, 17006, 17930, 20176, 21182, 23701, 24837, 27645, 28965, 32084, 33504]

cp's OEIS Frontend

A023862 a(n) = 1t(n) + 2t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t = A008578 ({1} U primes).

Table of values

List of values

cp's OEIS Frontend

A023862 a(n) = 1*t(n) + 2*t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t = A008578 ({1} U primes).

Table of values

List of values

A023862 a(n) = 1t(n) + 2t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t = A008578 ({1} U primes).