45397

Appears in sequences

• a(n) = (n+1)*(n+2)*(n+3)*(19*n^3 + 111*n^2 + 200*n + 120)/720.at n=9A108684
• Products (semiprimes) of two distinct double-safe primes.at n=17A157356
• a(n) = 1 + (4*9^n - 9*4^n) / 5.at n=4A166132
• a(n) = n^3 - 4*n^2 + 6*n - 2.at n=34A188377
• Number of third differences of arrays of length 5 of numbers in 0..n.at n=35A228261
• Expansion of Product_{k>=1} (1 - k*x^k)/(1 + 2*x^k).at n=16A269155
• Numbers which can written in exactly four ways as a sum of two distinct nonzero pentagonal numbers.at n=2A333014