1366561

Appears in sequences

• Number of n X 6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 0 vertically.at n=9A207701
• Squares not divisible by 10 with digits d_1, d_2, ... d_k such that d_1^2 + ... + d_k^2 is a square.at n=38A254959
• Squares whose arithmetic mean of digits is 4 (i.e., the sum of digits is 4 times the number of digits).at n=18A316484
• Odd squares k for which A379113(k) > 1, i.e., k that have a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).at n=15A379121