A023869 - cp's OEIS frontend

A023869 a(n) = 1t(n) + 2t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t is A014306.

n	a(n)
1	0
2	1
3	3
4	2
5	4
6	3
7	6
8	10
9	15
10	14
11	19
12	18
13	24
14	23
15	30
16	29
17	37
18	36
19	45
20	54
21	64
22	63
23	74
24	73
25	85
26	84
27	97
28	96
29	110
30	109
31	124
32	123
33	139
34	138
35	154
36	152
37	169
38	167
39	185
40	204
41	224
42	223
43	244
44	243
45	265
46	264
47	287
48	286
49	310
50	309
51	334
52	333
53	359
54	358
55	385
56	383
57	410
58	408
59	436
60	434
61	463
62	461
63	491
64	489

[0, 1, 3, 2, 4, 3, 6, 10, 15, 14, 19, 18, 24, 23, 30, 29, 37, 36, 45, 54, 64, 63, 74, 73, 85, 84, 97, 96, 110, 109, 124, 123, 139, 138, 154, 152, 169, 167, 185, 204, 224, 223, 244, 243, 265, 264, 287, 286, 310, 309, 334, 333, 359, 358, 385, 383, 410, 408, 436, 434, 463, 461, 491, 489]

cp's OEIS Frontend

A023869 a(n) = 1t(n) + 2t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t is A014306.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	2
5	4
6	3
7	6
8	10
9	15
10	14
11	19
12	18
13	24
14	23
15	30
16	29
17	37
18	36
19	45
20	54
21	64
22	63
23	74
24	73
25	85
26	84
27	97
28	96
29	110
30	109
31	124
32	123
33	139
34	138
35	154
36	152
37	169
38	167
39	185
40	204
41	224
42	223
43	244
44	243
45	265
46	264
47	287
48	286
49	310
50	309
51	334
52	333
53	359
54	358
55	385
56	383
57	410
58	408
59	436
60	434
61	463
62	461
63	491
64	489

n	a(n)
1	0
2	1
3	3
4	2
5	4
6	3
7	6
8	10
9	15
10	14
11	19
12	18
13	24
14	23
15	30
16	29
17	37
18	36
19	45
20	54
21	64
22	63
23	74
24	73
25	85
26	84
27	97
28	96
29	110
30	109
31	124
32	123
33	139
34	138
35	154
36	152
37	169
38	167
39	185
40	204
41	224
42	223
43	244
44	243
45	265
46	264
47	287
48	286
49	310
50	309
51	334
52	333
53	359
54	358
55	385
56	383
57	410
58	408
59	436
60	434
61	463
62	461
63	491
64	489

cp's OEIS Frontend

A023869 a(n) = 1*t(n) + 2*t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t is A014306.

Table of values

List of values

A023869 a(n) = 1t(n) + 2t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t is A014306.

n	a(n)
1	0
2	1
3	3
4	2
5	4
6	3
7	6
8	10
9	15
10	14
11	19
12	18
13	24
14	23
15	30
16	29
17	37
18	36
19	45
20	54
21	64
22	63
23	74
24	73
25	85
26	84
27	97
28	96
29	110
30	109
31	124
32	123
33	139
34	138
35	154
36	152
37	169
38	167
39	185
40	204
41	224
42	223
43	244
44	243
45	265
46	264
47	287
48	286
49	310
50	309
51	334
52	333
53	359
54	358
55	385
56	383
57	410
58	408
59	436
60	434
61	463
62	461
63	491
64	489