74865

Appears in sequences

• a(n) = (n-1)*(2*n-1)*(3*n-1)*(4*n-1).at n=8A033593
• a(n) = -Product_{k=0..n} (8*k-1); octo-factorial numbers.at n=4A049210
• Octuple factorial, 8-factorial, n!8, n!!!!!!!!.at n=31A114800
• Egyptian fraction representation for the cube root of 26.at n=4A132502
• a(1)=1, a(n)=a(n-1)+n^1 if n odd, a(n)=a(n-1)+ n^4 if n is even.at n=13A140146
• Triangle sequence: T(n, k) = -Product_{j=0..k+1} ((n+1)*j - 1).at n=31A153187
• Triangle T(n, k) = Product_{j=0..k} (j*n + prime(m)), with T(n, 0) = prime(m) and m = 4, read by rows.at n=39A153272
• Triangle read by rows: T(n,k) = Product_{i=0..k-2} (i*n + n - 1).at n=24A153273
• Number of partitions of n+7 with largest inscribed rectangle having area <= n.at n=37A218628
• Positive integers whose square is the sum of 50 consecutive squares.at n=19A257781
• Numbers k such that k and k+1 have at least 4 but not both exactly 4 distinct prime factors.at n=13A321494