1 4 9 16 25 36 49
(Repeated sequence: x squared, x+1 squared, ...)
4 9 16 25 36 49 64
(Repeated sequence: x squared, x+1 squared, ...)
1 9 25 49 81 121 169
(Increasing repeated sequence: odd numbers squared)
4 16 36 64 100 144 196
(Increasing repeated sequence: even numbers squared)
0 1 8 27 64 125 216
(Increasing cubes)
2 4 6 3 6 9 4
(Repeated sequence: x, 2x, 3x)
2 4 3 6 4 8 5
(Alternating series: x, y, x+1, y+2, x+2, y+4, ...)
1 2 4 5 25 26 676
(Repeated sequence: x+1, x+1 squared)
1 2 10 11 55 56 280
(Repeated sequence: x+1, 5(x+1))
2 4 8 10 20 22 44
(Repeated sequence: x+2, 2(x+2))
49 36 25 16 9 4 1
(Decreasing repeated sequence: x squared, (x-1) squared, ...)
64 49 36 25 16 9 4
(Decreasing repeated sequence: x squared, (x-1) squared, ...)
169 121 81 49 25 9 1
(Decreasing odd numbers squared)
196 144 100 64 36 16 4
(Decreasing even numbers squared)
216 125 64 27 8 1 0
(Decreasing cubes)
1 3 6 8 16 18 36
(Alternating repeated sequence: n+2, 2n)
0 3 12 15 60 63 252
(Alternating repeated sequence: n+3, 4n)
1 3 12 14 56 58 232
(Alternating repeated sequence: n+2, 4n)
2 4 4 6 6 8 8
(Alternating repeated sequence: n+2, n+0)
15 20 18 23 21 26 24
(Alternating repeated sequence: n+5, n-2)
20 26 24 30 28 34 32
(Alternating repeated sequence: n+6, n-2)
99 9 88 8 77 7 66
(Decreasing repeated sequence: 10x+x, x)
555 5 666 6 777 7 888
(Increasing repeated sequence: 100x+10x+x, x)
5 50 6 60 7 70 8
(Increasing repeated sequence: x, 10x)
55 5 44 4 33 3 22
(Decreasing repeated sequence: 10x+x, x)