41823

Appears in sequences

• Pisot sequences E(6,8), P(6,8).at n=31A020716
• Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-4).at n=37A023434
• sigma(n) + n is a cube.at n=8A114070
• G.f. satisfies A(x) = 1 + x*A(x+x^2).at n=11A127782
• Smallest of three consecutive integers divisible respectively by three consecutive squares greater than 1.at n=12A178919
• Number of connected triangle-free graphs on n nodes with edge chromatic number 5.at n=10A207411
• a(1) = greatest k such that H(k) - H(8) < H(8) - H(4); a(2) = greatest k such that H(k) - H(a(1)) < H(a(1)) - H(8), and for n > 2, a(n) = greatest k such that H(k) - H(a(n-1)) > H(a(n-1)) - H(a(n-2)), where H = harmonic number.at n=14A227804
• Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=22A254903
• Composites whose prime factorization in base 5 is an anagram of the number in base 5.at n=21A260049
• The number of partitions of [n] with exactly 2 blocks without peaks.at n=19A289692
• One third the number of solid partitions of n with 5 parts.at n=36A387998