n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 465 |
3 | 10565 |
4 | 241697 |
5 | 5539893 |
6 | 127041105 |
7 | 2913686981 |
8 | 66827609633 |
9 | 1532754884725 |
10 | 35155272163473 |
11 | 806321934125125 |
12 | 18493816732267425 |
13 | 424174583966543669 |
14 | 9728877611505065297 |
15 | 223141752041771533125 |
16 | 5117984163043834408865 |
17 | 117386198048567829057141 |
[1,21,465,10565,241697,5539893,127041105, 2913686981,66827609633,1532754884725, 35155272163473,806321934125125,18493816732267425, 424174583966543669,9728877611505065297, 223141752041771533125,5117984163043834408865, 117386198048567829057141] |