75486

Appears in sequences

• Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic nonresidues mod p .at n=26A282726
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder up to horizontal and vertical reflections by a tile that is fixed under vertical reflections but not horizontal reflections.at n=42A368255
• Numbers m that divide the alternating sum Sum_{k=1..m} (-1)^k * A000005(k).at n=15A379923