Arithmetic Series: 1,4,7, ... N_{i-1}+3 ... 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 Geometric Series: 1,2,4, ... N_{i-1}*2 ... 1 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 Combination Series: 2,7,17, ... N_{i-1}*2+3 ... 2 7 17 37 77 157 317 637 1277 2557 5117 10237 20477 40957 81917 Fibonacci Numbers: 0,1,1,2,3, ... N_{i-1}+N_{i-2} ... 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377