80656

Appears in sequences

• a(n) = (8*n + 4)^2.at n=35A017114
• a(n) = (10*n + 4)^2.at n=28A017318
• a(n) = (11*n + 9)^2.at n=25A017498
• a(n) = (12*n + 8)^2.at n=23A017618
• Squares with initial digit '8'.at n=8A045792
• Squares whose arithmetic mean of digits is an integer (i.e., the sum of digits is a multiple of the number of digits).at n=41A069711
• Squares k such that k + pi(k) is a prime.at n=27A073946
• Values of n such that the perfect deficiency (A109883) of n and n+1 are both squares.at n=7A110278
• Squares whose decimal representation contains no proper subsequence which is a positive square.at n=8A130448
• Square numbers not of form m + sum of digits of m.at n=28A171671
• Numbers n (other than powers of 2) such that abs(abundance(n)) is an odd square.at n=4A188484
• Squares for which no final group of decimal digits less than the total forms a square.at n=37A192689
• Perfect powers equal to the sum of 6 factorial numbers.at n=36A227647
• Perfect powers equal to the sum of 7 factorial numbers.at n=46A227648
• Determinant of the n X n matrix with (i,j)-entry equal to 1 or 0 according as i + j and 4*(i + j)^2 + 1 are both prime or not.at n=43A228561
• Number of length 1+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.at n=38A248538
• Squares present in A276573 (the infinite trunk of least squares beanstalk).at n=56A277016
• Squares whose arithmetic mean of digits is 5 (i.e., the sum of digits is 5 times the number of digits).at n=19A316485
• Squares in whose primorial base expansion only even digits appear.at n=35A328850
• Squares s such that A331733(s) = sigma(A225546(n)) is congruent to 2 modulo 4.at n=31A331741