1040401

Appears in sequences

• Palindromes of form k^2 + 1.at n=7A027720
• Both m and its reverse are one more than a square and m does not end in 0.at n=10A066618
• Both k and its reverse are one more than a square.at n=19A124664
• Number of nX4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=8A207496
• Numbers n such that (n(n+1)/2) modulo sigma(n) = n.at n=27A232538
• Let q be the n-th prime power (A246655), then a(n) = q^3 + q^2 - q; number of solutions to x*y = z*w in the finite field F_q.at n=35A367014
• Palindromes of the form b^k + 1 or b^k - 1, with b, k > 1.at n=26A392319