24368

Appears in sequences

• Number of trees on n nodes with forbidden limbs.at n=9A014273
• n*10^5-1, n*10^5-3, n*10^5-7 and n*10^5-9 are all prime.at n=7A064979
• a(1)=1, a(n) is the smallest integer > a(n-1) such that the largest element in the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals prime(n).at n=33A070901
• a(0)=1, a(1)=0, a(2)=1, a(n) = a(n-1) + a(n-2) + 3*a(n-3).at n=15A123102
• Number of n X n symmetric binary matrices with each 1 adjacent to no more than 4 horizontally, vertically or diagonally neighboring 1s.at n=4A191603
• Number of ways to write n as an ordered sum of 8 prime powers (including 1).at n=11A341137