A032610 Concatenation of n and n + 5 or {n,n+5}.
16, 27, 38, 49, 510, 611, 712, 813, 914, 1015, 1116, 1217, 1318, 1419, 1520, 1621, 1722, 1823, 1924, 2025, 2126, 2227, 2328, 2429, 2530, 2631, 2732, 2833, 2934, 3035, 3136, 3237, 3338, 3439, 3540, 3641, 3742, 3843, 3944, 4045, 4146, 4247
Offset: 1