28898

Appears in sequences

• Length of hypotenuse squared in right triangle formed by a prime spiral plotted in Cartesian coordinates.at n=30A048851
• a(n) = prime(n+1)^2 + prime(n)^2.at n=29A069484
• a(n) = prime(n)_prime(n).at n=38A122622
• Digit sum of Fibonacci primes.at n=28A139537
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (0, -1, 1), (1, 0, -1), (1, 1, 1)}.at n=9A149429
• Semiprimes that are sums of squares of two consecutive primes.at n=4A216432
• Numbers n such that prime(n) + reversal(prime(n)) is a square.at n=20A227371
• Number of set partitions of [n] such that the difference between each element and its block index is a multiple of five.at n=21A274838
• a(n) = 2*n^3 - 4*n^2 + 6*n - 2 (n>=1).at n=24A304159
• Indices of primes followed by a gap (distance to next larger prime) of 44.at n=39A320720
• a(n) is the smallest k such that the first n digits of Fibonacci(k) are the reverse of its last n digits.at n=4A372729
• a(n) is the least number k whose sum of digits in base 10 is n and that is palindromic in base n, or -1 if no such number exists.at n=32A375387