OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..765
EXAMPLE
a(2) = 14: {1,7}, {1,15}, {2,6}, {2,14}, {3,5}, {3,13}, {4,12}, {5,11}, {6,10}, {7,9}, {8,16}, {9,15}, {10,14}, {11,13}.
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Aug 29 2018
STATUS
approved