74530

Appears in sequences

• Denominators of the first differences of 1/(n^2 + 1).at n=16A033466
• Table of number of domino tilings of generalized Aztec pillows of type (1, ..., 1, 3, 1, ..., 1)_n.at n=41A112830
• a(n) = n^4/8 + (5*n^3)/12 - n^2/8 - (5*n)/12 + 1.at n=28A226639
• Integers of the form k^2 + 1, where k >= 1, that are the product of two other integers of the form k^2 + 1, where k >= 1.at n=24A372496
• Numbers k such that k-1 is a perfect square and k+1 is prime.at n=24A392249