OFFSET
1,5
LINKS
Abraham Lempel, On extremal factors of the de Bruijn graph J. Combinatorial Theory Ser. B 11 1971 17--27. MR0276126 (43 #1874)
EXAMPLE
Triangle begins:
0 1
0 1 3
0 1 5 7
0 1 9 5 13 15
0 1 17 9 25 21 27 31
0 1 33 17 35 9 11 41 51 21 43 27 55 63
0 1 65 33 97 17 49 81 113 73 37 101 51 83 115 85 107 91 119 127
0 1 129 65 193 33 97 161 225 17 49 81 113 145 177 209 241 73 201 101 165 229 51 83 115 179 211 243 85 213 107 235 219 119 247 255...
CROSSREFS
KEYWORD
nonn,tabf,base
AUTHOR
N. J. A. Sloane, Mar 28 2012
STATUS
approved