login
A341992
Take a standard 6-sided die and concatenate the numbers that can be seen around any of the corners and sort into increasing order.
0
123, 124, 132, 135, 142, 145, 153, 154, 213, 214, 231, 236, 241, 246, 263, 264, 312, 315, 321, 326, 351, 356, 362, 365, 412, 415, 421, 426, 451, 456, 462, 465, 513, 514, 531, 536, 541, 546, 563, 564, 623, 624, 632, 635, 642, 645, 653, 654
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
Sequence in context: A302211 A308004 A192231 * A077378 A031509 A351479
KEYWORD
nonn,base,fini,full
AUTHOR
Halfdan Skjerning, Feb 25 2021
STATUS
approved