1050625

Appears in sequences

• Numbers that are the sum of 4 nonzero 10th powers.at n=17A004804
• Numbers k such that k | 4^k + 1.at n=31A015950
• Numbers k that divide 4^k + 1, k not a power of 5.at n=22A015974
• Numbers that are the sum of 2 nonzero squares in exactly 7 ways.at n=19A025290
• Numbers that are the sum of 2 distinct nonzero squares in exactly 7 ways.at n=22A025308
• a(n) = (2^n + 1)^2.at n=10A028400
• Squares which are palindromes in base 4.at n=12A029987
• Smallest square which is one more than the product of n (not necessarily distinct) numbers > 1.at n=13A081949
• Smallest square which is one more than the product of n (not necessarily distinct) numbers > 1.at n=14A081949
• Main diagonal of A082043: a(n) = n^4 + 2*n^2 + 1.at n=32A082044
• a(2*n) = -(2^(2*n+1) + 1), a(2*n+1) = (2^(n+1) - (-1)^n)^2.at n=19A105951
• a(2n) = 2*4^n-1, a(2n+1) = (2^(n+1)+1)^2; interlaces A083420 with A028400.at n=19A107663
• Left truncatable squares, ending in 5.at n=27A117246
• Maximum number of rational points on a smooth absolutely irreducible projective curve of genus 1 over the field F_2^n.at n=19A169872
• a(n) = 1+4^(n+1)-4*(-2)^n.at n=9A171590
• Squares n with digit 1 that remain positive square after omitting all 1's from n.at n=16A176899
• 1/4 the number of (n+1) X 2 binary arrays with all 2 X 2 subblock sums the same.at n=20A183978
• Number of nX4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.at n=13A207904
• Square numbers not divisible by 100 that remain square when their most-significant (or leftmost) digit is removed.at n=33A247267
• Smallest square that remains a square when prefixed with n.at n=38A247885