Table 1 Number of compositions and sequences comprised of 20 letters, of length not greater than L, for L ranging from 3 to 10, and their ratios (rounded)
From: A parallel method for enumerating amino acid compositions and masses of all theoretical peptides
Length of Peptides (L) | Number of Compositions (A) | Number of Sequences (B) | Ratio B/A |
|---|---|---|---|
3 | 1,770 | 8,420 | 5 |
4 | 10,625 | 168,420 | 16 |
5 | 53,129 | 3,368,420 | 63 |
6 | 230,229 | 67,368,420 | 293 |
7 | 888,029 | 1,347,368,420 | 1,517 |
8 | 3,108,104 | 26,947,368,420 | 8,670 |
9 | 10,015,004 | 538,947,368,420 | 53,814 |
10 | 30,045,014 | 10,778,947,368,420 | 358,760 |