A290588 - OEIS

A290588 as a simple table

n	a(n)
1	5
2	13
3	35
4	113
5	355
6	1105
7	3435
8	10625
9	32723
10	100433
11	307323
12	937985
13	2856547
14	8682897
15	26349835
16	79850241
17	241679859
18	730700881
19	2207155867
20	6661493633
21	20090908803
22	60555714705
23	182419600683
24	549259559297
25	1653098625555
26	4973441442385
27	14957936920763

[5,13,35,113,355,1105,3435,10625,32723,100433, 307323,937985,2856547,8682897,26349835,79850241, 241679859,730700881,2207155867,6661493633, 20090908803,60555714705,182419600683,549259559297, 1653098625555,4973441442385,14957936920763]

[5,13,35,113,355,1105,3435,10625,32723,100433,
 307323,937985,2856547,8682897,26349835,79850241,
 241679859,730700881,2207155867,6661493633,
 20090908803,60555714705,182419600683,549259559297,
 1653098625555,4973441442385,14957936920763]