1147041

Appears in sequences

• Squares of odd heptagonal numbers.at n=10A014773
• Numbers k having exactly one divisor d such that in binary representation d and k/d have the same number of 1's as k.at n=36A080026
• a(1) = 1, then least square such that every partial concatenation is a prime.at n=19A090257
• Squares k such that k - 2 and k + 2 are prime.at n=21A144938
• Number of (n+2)X5 binary arrays avoiding patterns 000 and 010 in rows and columns.at n=3A202401
• Number of (n+2) X 6 binary arrays avoiding patterns 000 and 010 in rows and columns.at n=2A202402
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 000 and 010 in rows and columns.at n=17A202406
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 000 and 010 in rows and columns.at n=18A202406
• Odd squares k, multiples of 3 and non-multiples of 5, such that sigma(k)/k >= 5/3.at n=23A388016