Table 2. Adjusted palindrome index (API) scores for HIV-1 integration site sequences.

Sequence length	API for consensus	Mean API, $\overline{{\rho }_A}$	p value (𝓗0)
25	0.88	–0.01	8.21 × 10–9
23	0.87	–0.01	1.60 ×10–8
21	0.86	–0.01	4.29 ×10–9
19	0.85	–0.01	1.29 × 10–11
17	0.83	–0.01	1.08 ×10–12
15	0.8	–0.02	1.04 ×10–13
13	1	–0.02	3.16 ×10–18
11	1	–0.03	1.69 × 10–26
9	1	–0.03	1.02 ×10–27
7	1	–0.03	8.57 × 10–25
5	1	–0.04	1.09 ×10–24
3	1	–0.07	1.95 × 10–35