n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 28 |
4 | 98 |
5 | 351 |
6 | 1261 |
7 | 4523 |
8 | 16233 |
9 | 58268 |
10 | 209132 |
11 | 750597 |
12 | 2693993 |
13 | 9669101 |
14 | 34703683 |
15 | 124556124 |
16 | 447048462 |
17 | 1604516243 |
18 | 5758821685 |
19 | 20669175143 |
20 | 74184412085 |
21 | 266257698140 |
22 | 955634207080 |
23 | 3429897967721 |
24 | 12310358902801 |
[1,7,28,98,351,1261,4523,16233,58268,209132, 750597,2693993,9669101,34703683,124556124, 447048462,1604516243,5758821685,20669175143, 74184412085,266257698140,955634207080, 3429897967721,12310358902801] |