2547216

Appears in sequences

• Squares of even triangular numbers.at n=27A014738
• Squares which are palindromes in base 11.at n=20A029997
• Even squares in which parity of digits alternates.at n=27A030158
• Least number expressible as a^2 + p b^2 with positive integers a,b, for each prime p <= prime(n) = A000040(n).at n=11A155714
• Least number expressible as a^2 + p b^2 with positive integers a,b, for each prime p <= prime(n) = A000040(n).at n=12A155714
• Bisections are {b(n)*b(n+1), n>=0} (shifted) and {b(n)^2, n>=0} where {b(n), n>=0} is the self-convolution of this sequence, with a(0)=1.at n=17A173610
• Odd bisection of A173610.at n=8A173612
• Number of nX2 binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally.at n=13A188516
• Number of n X 6 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=16A299593
• Primitives exponential abundant numbers that are not primitives exponential unitary abundant.at n=20A391086
• Primitive exponential Zumkeller numbers that are not primitive exponential unitary Zumkeller numbers.at n=22A391091