201601

Appears in sequences

• a(n) = (12*n + 5)^2.at n=37A017582
• a(n) = prime^2 and digits of prime do not appear in a(n).at n=19A030088
• Composite numbers whose prime factors have no digits other than 4's and 9's.at n=0A036319
• Smallest square which is one more than the product of n (not necessarily distinct) numbers > 1.at n=11A081949
• Squares pertaining to A087334: a(n) = n-th partial product of A087334 + 1.at n=5A087335
• Triangle, read by rows, T(n, k) = T(n, k-1) + (k+1)*n!, T(n, 0) = 1.at n=38A105064
• "Binary prime squares": squares whose binary expansions, read as decimal expansions, are primes.at n=18A108324
• Squares of the form 6p+7 for p prime (A110015) that are squares of a prime.at n=36A110586
• Numbers k such that sigma(k) - phi(k) is a brilliant number (A078972).at n=29A115917
• Squares for which both the sum of the digits and the product of the digits is a triangular number.at n=25A118490
• Numbers n for which the absolute value of the abundance of both n and n^2 is a prime number.at n=29A125237
• Numbers n for which the absolute values of the abundances of n, n^2 and n^3 are all prime numbers.at n=1A125249
• a(n) = (14*n+1)^2.at n=32A134934
• Numbers k of the form q^2, q = prime, such that k-2 is a prime.at n=31A146981
• Squares that becomes a prime number when prefixed with a 9.at n=29A167724
• a(n) = 5*n! + 1.at n=8A173319
• Squares in A111153.at n=23A175255
• Prime powers p^k with even exponents k > 0 such that (1 + p^k)/2 is prime.at n=24A192618
• Number of positive integer solutions to the Diophantine equation x + y + 2z = n^2.at n=29A218832
• Prime powers (A025475) representable as (p+q)/2, where p and q are distinct prime powers.at n=30A225388