The number sequence is named after the Colombian mathematician Bernardo Recamán Santos.
The numbers are calculated with the formula
The first numbers are
0,
1,
3,
6,
2,
7,
13,
20,
12,
21,
11,
22,
10,
23,
9,
24,
8,
25,
43,
62,
42,
63,
41,
18,
42,
17,
43,
16,
44,
15,
45,
14,
46,
79,
113,
78,
114,
77,
39,
78,
38,
79,
37,
80,
36,
81,
35,
82,
34,
83,
33,
84,
32,
85,
31,
86,
30,
87,
29,
88,
28,
89,
27,
90,
26,
91,
157,
224,
156,
225,
155