127875

Appears in sequences

• a(n)/100000 gives log_10(n) to 5 places.at n=18A027665
• Triangle, read by rows, such that the diagonal (A084785) is the self-convolution of the first column (A084784) and the row sums (A084786) gives the differences of the diagonal and the first column.at n=41A084783
• A129027(n)/4.at n=15A129028
• Number of nX4 0..1 arrays with every element unequal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=16A317737