A166354 - cp's OEIS frontend

A166354 Row sums of exponential Riordan array [1+x*tan(x/2),x], A166353.

n	a(n)
0	1
1	1
2	2
3	4
4	8
5	16
6	34
7	78
8	200
9	568
10	1806
11	6282
12	24052
13	99100
14	443178
15	2107966
16	10775664
17	58092112
18	334087750
19	2012990930
20	12863046636
21	85662585604
22	602124105122
23	4391793687974
24	33676375206568
25	266989039507576

[1, 1, 2, 4, 8, 16, 34, 78, 200, 568, 1806, 6282, 24052, 99100, 443178, 2107966, 10775664, 58092112, 334087750, 2012990930, 12863046636, 85662585604, 602124105122, 4391793687974, 33676375206568, 266989039507576]

cp's OEIS Frontend

A166354 Row sums of exponential Riordan array [1+x*tan(x/2),x], A166353.

Table of values

List of values