The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 10 |
| 3 | 20 |
| 4 | 32 |
| 5 | 48 |
| 6 | 74 |
| 7 | 104 |
| 8 | 131 |
| 9 | 159 |
| 10 | 195 |
| 11 | 245 |
| 12 | 294 |
| 13 | 331 |
| 14 | 380 |
| 15 | 447 |
| 16 | 517 |
| 17 | 582 |
| 18 | 640 |
| 19 | 710 |
| 20 | 791 |
| 21 | 874 |
| 22 | 969 |
| 23 | 1055 |
| 24 | 1131 |
| 25 | 1229 |
| 26 | 1344 |
| 27 | 1458 |
| 28 | 1559 |
| 29 | 1654 |
| 30 | 1776 |
| 31 | 1915 |
| 32 | 2038 |
| 33 | 2156 |
| 34 | 2280 |
| 35 | 2416 |
| 36 | 2573 |
| 37 | 2722 |
| 38 | 2862 |
| 39 | 3012 |
| 40 | 3163 |
| 41 | 3333 |
| 42 | 3504 |
| 43 | 3658 |
| 44 | 3829 |
| 45 | 4001 |
| 46 | 4184 |
| 47 | 4393 |
[1,4,10,20,32,48,74,104,131,159,195,245,294,331, 380,447,517,582,640,710,791,874,969,1055,1131, 1229,1344,1458,1559,1654,1776,1915,2038,2156,2280, 2416,2573,2722,2862,3012,3163,3333,3504,3658,3829, 4001,4184,4393] |