101808

Appears in sequences

• Number of (n+1) X (2+1) 0..1 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to one.at n=6A231992
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to one.at n=34A231997
• Number of (7+1) X (n+1) 0..1 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to one.at n=1A232004
• Consider numbers n = concat(x,y,z) such that the product x*y*z | n. Leading zeros in y and z allowed. Sequence lists numbers that admit different concatenations.at n=17A256518
• a(n) = Sum_{k=1..n} phi(gcd(k, n))^(n/gcd(k, n)).at n=38A342541
• Numbers that are the concatenation of two palindromes and that have exactly two palindromic factors, all with the same number of decimal digits.at n=26A355148