n | a(n) |
---|---|
0 | 4 |
1 | 9 |
2 | 76 |
3 | 161 |
4 | 1364 |
5 | 2889 |
6 | 24476 |
7 | 51841 |
8 | 439204 |
9 | 930249 |
10 | 7881196 |
11 | 16692641 |
12 | 141422324 |
13 | 299537289 |
14 | 2537720636 |
15 | 5374978561 |
16 | 45537549124 |
17 | 96450076809 |
18 | 817138163596 |
19 | 1730726404001 |
20 | 14662949395604 |
[4,9,76,161,1364,2889,24476,51841,439204,930249, 7881196,16692641,141422324,299537289,2537720636, 5374978561,45537549124,96450076809,817138163596, 1730726404001,14662949395604] |