226740

Appears in sequences

• Sequence shifts left six places under Weigh transform with a(n) = signum(n) for n<6.at n=44A316078
• Fill an infinite square array by following a spiral around the origin; in the central cell enter a(0)=1; thereafter, in the n-th cell, enter the sum of the entries of those earlier cells that are in the same row or column as that cell.at n=26A334741