7820115

Appears in sequences

• Rightmost border of triangle A127714: a(n) = A127714(n, (n+1)*(n+2)/2 - 1).at n=9A127715
• Triangle T, read by rows, where column k of T = column 0 of matrix power T^(k+1) for k>0, with column 0 of T = unsigned column 0 of T^-1 (shifted).at n=45A152400
• Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms in row n at positions {m*(m+1)/2, m>=0} and then taking partial sums, starting with all 1's in row 0.at n=45A152405