73969

Appears in sequences

• Smallest k such that 36^k mod k = n.at n=85A178197
• Consider a number n with m decimal digits, m>9. The sequence lists the numbers n such that the prefix of length m-1 and the suffix of length m-1 are both perfect squares.at n=42A244283
• a(n) = 2*n^4 - floor(2^(1/4)*n)^4.at n=25A257854
• a(0) = 1 and a(n) = A005169(n) - A005169(n-1).at n=24A289080
• Numbers that cannot be expressed as sum of at most nine repdigits numbers. One may not add two integers with the same repeated digit.at n=33A339673
• Numbers whose second digit is not zero and such that removing either the first or last digit leaves a square number.at n=23A343855
• Indices of the primes that have the same base-10 digits as the corresponding prime number (with multiplicity), disregarding zero digits.at n=16A355318