275423

Properties

Appears in sequences

• Appending a digit to n^2 gives another perfect square.at n=24A031150
• Expansion of -x*(x+1)^2*(x^8-2*x^7+2*x^6-3*x^5+3*x^4+2*x^2-x+1) / (x^12+6*x^6-1).at n=40A121795
• Expansion of -x*(x+1)^2*(x^8-2*x^7+2*x^6-3*x^5+3*x^4+2*x^2-x+1) / (x^12+6*x^6-1).at n=42A121795
• Expansion of -x*(x+1)^2*(x^8-2*x^7+2*x^6-3*x^5+3*x^4+2*x^2-x+1) / (x^12+6*x^6-1).at n=43A121795
• Expansion of -x*(x+1)^2*(x^8-2*x^7+2*x^6-3*x^5+3*x^4+2*x^2-x+1) / (x^12+6*x^6-1).at n=44A121795
• Numerators in convergents to infinitely repeating period 3 palindromic continued fraction [1,2,1,...].at n=21A179238
• Numbers m such that 10*m^2 + 6 is a square.at n=7A221874
• a(n) = 6*a(n-2) + a(n-4), where a(0) = 3, a(1) = 5, a(2) = 19, a(3) = 31.at n=13A228471
• Denominators of continued fraction convergents to sqrt(10)/2 = sqrt(5/2) = A020797 + 1.at n=21A295334
• Prime numbersat n=24072