84681

Appears in sequences

• a(n) = (8n + 3)^2.at n=36A017102
• a(n) = (10*n + 1)^2.at n=29A017282
• a(n) = (11*n + 5)^2.at n=26A017450
• a(n) = (12*n + 3)^2.at n=24A017558
• a(n+1) is smallest square > a(n) having no digits in common with a(n), with a(0) = 0.at n=27A030288
• Odd refactorable numbers.at n=30A036896
• Square refactorable numbers.at n=38A036907
• Squares with initial digit '8'.at n=15A045792
• Squares for which the sum of the digits are cubes.at n=30A117685
• RF(3): refactorable numbers with smallest prime factor 3.at n=28A120319
• Squares that become a prime number when prefixed with a 2.at n=15A167717
• Number of 0..n arrays x(0..5) of 6 elements without any interior element greater than both neighbors.at n=7A200889
• Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 1 0 vertically.at n=9A208104
• Squares s such that s + 2 and s - 2 are semiprime.at n=37A278022
• Refactorable numbers that are perfect powers.at n=44A376120