What is the c'th term of -6, -23, -46, -75, -110, -151?
-
What is the t'th term of 211, 409, 607, 805?
-
What is the j'th term of -62, -248, -560, -1004, -1586, -2312, -3188?
-
What is the x'th term of 4, -209, -792, -1931, -3812, -6621, -10544?
-
What is the n'th term of -104, -212, -322, -434, -548, -664?
-
What is the u'th term of 7662, 15326, 22992, 30660, 38330?
-
What is the y'th term of -157, -197, -235, -271, -305, -337, -367?
一个美术生