A027022 - cp's OEIS frontend

A027022 a(n) = Sum_{k=floor((n+1)/2)..n} T(k,n-k); i.e., a(n) is n-th diagonal sum of left-justified array T given by A027011.

n	a(n)
1	1
2	3
3	4
4	7
5	11
6	15
7	26
8	34
9	57
10	79
11	123
12	181
13	269
14	406
15	597
16	900
17	1332
18	1991
19	2968
20	4414
21	6596
22	9805
23	14639
24	21792
25	32488
26	48418
27	72130
28	107532
29	160191
30	238776
31	355785
32	530211
33	790156
34	1177431
35	1754739
36	2614807
37	3896754
38	5806922
39	8653577
40	12895791

[1, 3, 4, 7, 11, 15, 26, 34, 57, 79, 123, 181, 269, 406, 597, 900, 1332, 1991, 2968, 4414, 6596, 9805, 14639, 21792, 32488, 48418, 72130, 107532, 160191, 238776, 355785, 530211, 790156, 1177431, 1754739, 2614807, 3896754, 5806922, 8653577, 12895791]

cp's OEIS Frontend

A027022 a(n) = Sum_{k=floor((n+1)/2)..n} T(k,n-k); i.e., a(n) is n-th diagonal sum of left-justified array T given by A027011.

Table of values

List of values