40504

Appears in sequences

• Palindromic in bases 10 and 11.at n=20A029966
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 35 ones.at n=16A031803
• Palindromes that start with 4.at n=27A043039
• a(n) = smallest palindrome > a(n-1) such that a(1)*a(2)*...*a(n) - 1 is a prime.at n=34A051954
• p(11p-7) where p is prime.at n=17A098998
• Number of nX3 0..2 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..2 introduced in row major order.at n=6A241134
• T(n,k)=Number of nXk 0..2 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..2 introduced in row major order.at n=38A241138
• T(n,k)=Number of nXk 0..2 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..2 introduced in row major order.at n=42A241138
• Numbers n representable as x*y + x + y, where x >= y > 1, such that all x's and y's in all representation(s) of n are perfect squares.at n=39A258366
• a(0)=a(1)=1, a(2)=3, thereafter a(n) = n*a(n-1)+(n-1)*(n-2)*a(n-2).at n=7A291287
• Least integer k such that k/2^n > 1/phi, where phi = (1+sqrt(5))/2 = golden ratio.at n=16A293323