OFFSET
1,4
COMMENTS
Every integer occurs in A191361 (infinitely many times).
Represent the array as {g(i,j): i>=1, j>=1}. Then for m>=0, (diagonal #m) is the sequence (g(i,i+m)), i>=1;
for m<0, (diagonal #m) is the sequence (g(i+m,i)), i>=1.
EXAMPLE
Diagonal #0 (the main diagonal) of A080164 is (1,7,26,...), so a(1)=0, a(7)=0, a(26)=0.
MATHEMATICA
CROSSREFS
KEYWORD
sign
AUTHOR
Clark Kimberling, May 31 2011
STATUS
approved