A027021 - cp's OEIS frontend

A027021 a(n) = T(n,n) + T(n,m+1) + ... + T(n,n), where m=[ (n+2)/2 ], T given by A027011.

n	a(n)
1	1
2	1
3	6
4	7
5	36
6	56
7	181
8	317
9	826
10	1531
11	3576
12	6832
13	15021
14	29201
15	61966
16	121727
17	252796
18	499816
19	1024101
20	2033077
21	4130226
22	8220851
23	16609456
24	33115232
25	66669661
26	133067881
27	267285606
28	533860567
29	1070731476
30	2139602456

[1, 1, 6, 7, 36, 56, 181, 317, 826, 1531, 3576, 6832, 15021, 29201, 61966, 121727, 252796, 499816, 1024101, 2033077, 4130226, 8220851, 16609456, 33115232, 66669661, 133067881, 267285606, 533860567, 1070731476, 2139602456]

cp's OEIS Frontend

A027021 a(n) = T(n,n) + T(n,m+1) + ... + T(n,n), where m=[ (n+2)/2 ], T given by A027011.

Table of values

List of values