OFFSET
1,4
EXAMPLE
Row 5 of the triangle is [3,2,2,2,2]. There are 4 positive integers (1,4,5,6) which are coprime to 1, are <= 6 and are not among the terms of row 5. There are 2 positive integers (1,5) which are <= 6, are coprime to 2 and are not among the terms of row 5. ...(Skipping over the m = 3, 4 and 5 cases.) There are 2 positive integer (1,5) which are <= 6, are coprime to 6 and do not occur in row 5.
So row 6 is [4,2,3,2,3,2].
MATHEMATICA
prev = {1}; Flatten[Join[{prev}, Table[prev = Table[Length[Select[Complement[Range[n], prev], CoprimeQ[#, m] &]], {m, n}], {n, 2, 14}]]] (* T. D. Noe, Mar 30 2011 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Leroy Quet, Apr 06 2006
EXTENSIONS
More terms from Sean A. Irvine, Mar 27 2011
STATUS
approved