126987

Appears in sequences

• Column 1 of matrix square of triangle A152400; also, column 3 of square array A152405.at n=6A152404
• 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=48A152405
• Number of 3Xn 0..2 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=8A222575
• Expansion of e.g.f. Product_{k>=1} (1 + x^k)^exp(x).at n=7A347915