506056

Appears in sequences

• Number of 1..9 integer arrays v[1..n] of length n with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1.at n=5A171283
• Number of 1..n integer arrays v[1..6] of length 6 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..5.at n=8A171343
• Non-Niven (or non-Harshad) numbers that are divisible by the square of the sum of the squares of their digits.at n=14A379981
• Nonmultiples of 10 that are divisible by the square of the sum of the squares of their digits.at n=27A379982