53365

Appears in sequences

• Number of n X 6 0..2 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 3.at n=29A239359
• Irregular triangular array: row n gives numbers D, each being the discriminant of the minimal polynomial of a quadratic irrational represented by a continued fraction with period an n-tuple of 1s and 3s.at n=46A246921
• Irregular triangular array: every periodic simple continued fraction CF represents a quadratic irrational (c + f*sqrt(d))/b, where b,c,f,d are integers and d is squarefree. Row n of this array shows the distinct values of d as CF ranges through the periodic continued fractions having period an n-tuple of 1s and 3s.at n=46A246922
• Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=9A299677
• Total number of divisors d of m (counted with multiplicity), such that the prime signature of d is a partition of six and m runs through the set of least numbers whose prime signature is a partition of n.at n=9A309921
• Total number of divisors d of m (counted with multiplicity), such that the prime signature of d is a partition of nine and m runs through the set of least numbers whose prime signature is a partition of n.at n=6A309924
• Number of labeled n-node graphs with no cycles of length less than 5.at n=6A337685