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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 15 |
| 4 | 24 |
| 5 | 63 |
| 6 | 120 |
| 7 | 255 |
| 8 | 480 |
| 9 | 1023 |
| 10 | 1920 |
| 11 | 4095 |
| 12 | 7680 |
| 13 | 16383 |
| 14 | 32640 |
| 15 | 65535 |
| 16 | 114176 |
| 17 | 262143 |
| 18 | 407552 |
| 19 | 1048575 |
| 20 | 1769472 |
| 21 | 4194303 |
| 22 | 7077888 |
| 23 | 16777215 |
| 24 | 28409856 |
| 25 | 67108863 |
| 26 | 101056512 |
| 27 | 268435455 |
| 28 | 504889344 |
| 29 | 1073741823 |
| 30 | 2045214720 |
| 31 | 4294967295 |
| 32 | 7643987968 |
[1,3,6,15,24,63,120,255,480,1023,1920,4095,7680, 16383,32640,65535,114176,262143,407552,1048575, 1769472,4194303,7077888,16777215,28409856, 67108863,101056512,268435455,504889344,1073741823, 2045214720,4294967295,7643987968] |