n | a(n) |
---|---|
1 | 20 |
2 | 290 |
3 | 2215 |
4 | 7405 |
5 | 21150 |
6 | 43490 |
7 | 88230 |
8 | 151135 |
9 | 250825 |
10 | 384360 |
11 | 578840 |
12 | 814180 |
13 | 1151525 |
14 | 1550530 |
15 | 2063225 |
16 | 2676925 |
17 | 3452460 |
18 | 4333340 |
19 | 5436210 |
20 | 6668320 |
21 | 8154980 |
22 | 9837690 |
23 | 11822175 |
24 | 13993360 |
25 | 16569650 |
26 | 19401865 |
27 | 22636495 |
28 | 26182350 |
29 | 30253225 |
30 | 34608450 |
31 | 39628050 |
[20,290,2215,7405,21150,43490,88230,151135,250825, 384360,578840,814180,1151525,1550530,2063225, 2676925,3452460,4333340,5436210,6668320,8154980, 9837690,11822175,13993360,16569650,19401865, 22636495,26182350,30253225,34608450,39628050] |