n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 7 |
3 | 21 |
4 | 66 |
5 | 192 |
6 | 565 |
7 | 1579 |
8 | 4348 |
9 | 11582 |
10 | 30205 |
11 | 76736 |
12 | 191120 |
13 | 465920 |
14 | 1115572 |
15 | 2623885 |
16 | 6074353 |
17 | 13849021 |
18 | 31137381 |
19 | 69082779 |
20 | 151390617 |
21 | 327897173 |
22 | 702426987 |
23 | 1489108503 |
24 | 3125821257 |
25 | 6500086120 |
26 | 13396645887 |
27 | 27376083598 |
28 | 55490121271 |
29 | 111604327066 |
30 | 222798559100 |
[1,2,7,21,66,192,565,1579,4348,11582,30205,76736, 191120,465920,1115572,2623885,6074353,13849021, 31137381,69082779,151390617,327897173,702426987, 1489108503,3125821257,6500086120,13396645887, 27376083598,55490121271,111604327066,222798559100] |