933156

Appears in sequences

• a(n) = Stirling_2(n,3)^2.at n=8A129839
• Coefficients of tribonacci numbers expansion : similar to the Fibonacci number expansion given in Steve Roman's Umbral Calculus.at n=39A137431
• Alternatively squares and cubes with prime differences.at n=32A186882
• Numbers with prime factorization p^2*q^2*r^2*s^2 where p, q, r, and s are distinct primes.at n=15A190377
• Composite numbers whose number of proper divisors has a number of proper divisors which has a prime number of proper divisors.at n=27A223457
• Non-Niven (or non-Harshad) numbers that are divisible by the square of the sum of the squares of their digits.at n=24A379981