OFFSET
1,1
COMMENTS
These are the three-digit numbers that can be read from the simultaneously visible faces that share the same corner on a 6-sided die with a traditional layout (in which the number of pips of opposite sides add up to 7).
3-digit numbers such that the digits are distinct and in 1..6, no two digits add up to 7. - Jianing Song, Mar 21 2021
FORMULA
a(n) + a(49-n) = 777 for n = 1..48. - Rémy Sigrist, Feb 26 2021
CROSSREFS
KEYWORD
nonn,base,fini,full
AUTHOR
Halfdan Skjerning, Feb 25 2021
STATUS
approved