已知数列{an}满足an=
.
0 54514 54522 54528 54532 54538 54540 54544 54550 54552 54558 54564 54568 54570 54574 54580 54582 54588 54592 54594 54598 54600 54604 54606 54608 54609 54610 54612 54613 54614 54616 54618 54622 54624 54628 54630 54634 54640 54642 54648 54652 54654 54658 54664 54670 54672 54678 54682 54684 54690 54694 54700 54708 266669
(1)试比较an与an+1的大小.
(2)an=(n+1)(
)n,试判断此数列的增减性和有界性.
(3)在(2)中有无最大项?若有,求出最大项和最大项项数;若没有,说明理由.