| Giver | Post | Date |
| nat724 | If a1, a2, a3, ..., an, ... is a sequence such that an = 2n | 27-Feb-2017 |
| pvikas | If a1, a2, a3, ..., an, ... is a sequence such that an = 2n | 17-May-2016 |
| dk99 | If a1, a2, a3, ..., an, ... is a sequence such that an = 2n | 29-Jan-2016 |
| TheDelhiDude | If a1, a2, a3, ..., an, ... is a sequence such that an = 2n | 20-Sep-2014 |