26394

Appears in sequences

• Numbers k such that k and k^2 have the same set of digits.at n=17A029793
• Squarefree numbers of the form (prime(k)+1)*(prime(k+1)+1)/4.at n=14A079095
• Numbers k such that k and k^2 use only the digits 2, 3, 4, 6 and 9.at n=13A137073
• Number of 3-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=41A187298
• Number of n X n nonnegative integer arrays with each row and column increasing from zero by 0 or 1.at n=5A202751
• Number of n X 6 nonnegative integer arrays with each row and column increasing from zero by 0 or 1.at n=5A202754
• T(n,k)=Number of nXk nonnegative integer arrays with each row and column increasing from zero by 0 or 1.at n=60A202756
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w^3<x^3+y^3.at n=35A211801
• Number of n X 2 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=44A239594
• Zeroless numbers n such that n and n^2 have the same set of decimal digits.at n=5A257763
• Numbers n such that both n and n squared contain exactly the same digits, and n is not divisible by 10.at n=10A258231
• a(n) is the multiplicative inverse of A008514(n) modulo A008514(n+1).at n=15A334121