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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 15 |
| 3 | 35 |
| 4 | 70 |
| 5 | 126 |
| 6 | 210 |
| 7 | 331 |
| 8 | 505 |
| 9 | 770 |
| 10 | 1221 |
| 11 | 2080 |
| 12 | 3822 |
| 13 | 7385 |
| 14 | 14501 |
| 15 | 28201 |
| 16 | 53585 |
| 17 | 99043 |
| 18 | 178335 |
| 19 | 314413 |
| 20 | 546806 |
| 21 | 946121 |
| 22 | 1642244 |
| 23 | 2877925 |
| 24 | 5107821 |
| 25 | 9176831 |
| 26 | 16634509 |
| 27 | 30281870 |
| 28 | 55117511 |
| 29 | 99979855 |
| 30 | 180425076 |
| 31 | 323834920 |
| 32 | 578593536 |
| 33 | 1030721985 |
| 34 | 1834160110 |
| 35 | 3265884047 |
[1,5,15,35,70,126,210,331,505,770,1221,2080,3822, 7385,14501,28201,53585,99043,178335,314413,546806, 946121,1642244,2877925,5107821,9176831,16634509, 30281870,55117511,99979855,180425076,323834920, 578593536,1030721985,1834160110,3265884047] |