22678

Appears in sequences

• Sum of staircase twin primes according to the rule: top * bottom + next top.at n=11A135286
• a(n) = largest value of the function rad(m*n*(n - m)) n=2,3,4,..., 0 < m < n where the function rad(k) (also called radical(k)) is the product of distinct prime divisors of k.at n=44A147299
• The even composites c such that c=q*g*j*y and q+g=j*y where q,g,j,y are primes.at n=36A167690
• Numbers k such that k and k+17 have same sum of divisors.at n=9A172335
• Nonprime numbers with a sum of nonprime divisors which is a perfect square.at n=36A194580
• n*(n^2-2*n-1).at n=28A214446
• Number of inversion sequences avoiding pattern 100.at n=8A263780
• Number of non-strict integer partitions of n with at least one part of odd multiplicity that is not the first or last.at n=38A349796
• Number of oriented orthoplex n-ominoes with cell centers determining n-3 space.at n=5A355047
• Squarefree numbers k such that k^2 is abundant, and d^2 is nonabundant for any proper divisor d of k.at n=41A381741