72045

Appears in sequences

• Sum of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly n ways.at n=8A076459
• Alternating sums of powers of 1,2,...,6, divided by 3.at n=7A198629
• Number of (n+1)X(2+1) 0..2 arrays x(i,j) with every row sum{j*x(i,j), j=1..2+1} equal, and every column sum{i*x(i,j), i=1..n+1} equal.at n=12A232610