In the sequence 1,3,9,27,81,…1, 3, 9, 27, 81, \ldots1,3,9,27,81,…, what is the sum of the 2nd, 4th, 6th, and 8th terms?
3+27+243+2187=24603 + 27 + 243 + 2187 = 24603+27+243+2187=2460
3+27+81+243=3543 + 27 + 81 + 243 = 3543+27+81+243=354
1+27+243+2187=24581 + 27 + 243 + 2187 = 24581+27+243+2187=2458
9+81+729+6561=73809 + 81 + 729 + 6561 = 73809+81+729+6561=7380