OFFSET
6,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 6..200
EXAMPLE
a(6) = 2: 132546, 142536.
a(7) = 29: 1243657, 1253647, 1324657, 1325467, 1325476, 1326475, 1326574, 1425367, 1425376, 1426375, 1426573, 1436572, 1526374, 1526473, 1536472, 2143657, 2153647, 2436571, 2536471, 3142657, 3152647, 4132657, 4152637, 5132647, 5142637, 6132547, 6142537, 7132546, 7142536.
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Nov 06 2015
STATUS
approved