n | a(n) |
---|---|
1 | 2 |
2 | 15 |
3 | 60 |
4 | 175 |
5 | 420 |
6 | 882 |
7 | 1680 |
8 | 2970 |
9 | 4950 |
10 | 7865 |
11 | 12012 |
12 | 17745 |
13 | 25480 |
14 | 35700 |
15 | 48960 |
16 | 65892 |
17 | 87210 |
18 | 113715 |
19 | 146300 |
20 | 185955 |
21 | 233772 |
22 | 290950 |
23 | 358800 |
24 | 438750 |
25 | 532350 |
26 | 641277 |
27 | 767340 |
28 | 912485 |
29 | 1078800 |
30 | 1268520 |
31 | 1484032 |
32 | 1727880 |
33 | 2002770 |
34 | 2311575 |
35 | 2657340 |
36 | 3043287 |
37 | 3472820 |
38 | 3949530 |
39 | 4477200 |
40 | 5059810 |
41 | 5701542 |
42 | 6406785 |
43 | 7180140 |
[2,15,60,175,420,882,1680,2970,4950,7865,12012, 17745,25480,35700,48960,65892,87210,113715,146300, 185955,233772,290950,358800,438750,532350,641277, 767340,912485,1078800,1268520,1484032,1727880, 2002770,2311575,2657340,3043287,3472820,3949530, 4477200,5059810,5701542,6406785,7180140] |