85850

Appears in sequences

• Numbers of the form (square + 1) that are not squarefree.at n=30A124809
• 1/12 of product of three numbers: n-th prime, previous and following number.at n=24A127921
• a(n) = 81*n^2 - 72*n + 17.at n=33A154277
• Numbers of the form q-p, where p and q are prime and q = p^0+p^1+p^2+..+p^k for some k.at n=20A166388
• Number of (n+2) X 6 0..1 matrices with each 3 X 3 subblock idempotent.at n=19A224555
• Numbers k of the form p^2 + 1 (for prime p) where k^2 + 1 is also prime.at n=8A235053
• Numbers m such that sigma(m-1) is a prime.at n=22A270413