57264

Appears in sequences

• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and 2w^2>x^2+y^2.at n=25A211632
• a(n) = 1*2*3*4 + 5*6*7*8 + 9*10*11*12 + 13*14*15*16 + 17*18*19*20 + ... + (up to n).at n=15A319205
• a(n) = 4*3*2*1 + 8*7*6*5 + 12*11*10*9 + 16*15*14*13 + ... + (up to the n-th term).at n=15A319868
• Table T(n,k) read by upward antidiagonals. T(n,k) = Sum_{i=1..n} Product_{j=1..k} (i-1)*k+j.at n=24A333446
• a(n) = Sum_{i=1..n} Product_{j=(i-1)*n+1..i*n} j.at n=3A336513