OFFSET
0,2
COMMENTS
a(n) is the total number of Q-toothpicks in the structure after n-th stage.
A267695 (the first differences) gives the number of Q-toothpicks added at n-th stage.
a(n) is also the total number of Q-toothpicks minus 1 after n+2 stages in the SW quadrant of the Q-toothpick structure of A187210, but with origing at (1,1) instead (0,0), and assuming that the initial Q-toothpick is in the first quadrant with origin at (0,0), if n>=1 . For more information see the comments and the formula of A187210.
LINKS
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Jan 23 2016
STATUS
approved