22688

Appears in sequences

• Coordination sequence for alpha-Mn, Position Mn3.at n=39A009952
• a(n) = [ a(n-1)/a(1) ] + [ a(n-3)/a(3) ] + [ a(n-5)/a(5) ] + ..., for n >= 3.at n=26A022860
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 75.at n=36A031573
• Least number k such that (n!+k)/n and (n!-k)/n are both prime.at n=29A245697
• Number of length n+3 0..2 arrays with no four consecutive terms having the maximum of any two terms equal to the minimum of the remaining two terms.at n=10A250381
• Rectangular array T(n,m), read by upward antidiagonals: T(n,m) is the number of difunctional (regular) binary relations between an n-element set and an m-element set.at n=38A265417
• Rectangular array T(n,m), read by upward antidiagonals: T(n,m) is the number of difunctional (regular) binary relations between an n-element set and an m-element set.at n=42A265417
• Sum of all the parts in the partitions of n into 6 parts.at n=32A308867
• Irregular table read by rows: The number of k-faced polyhedra, where k>=4, created when an n-prism, formed from two n-sided regular polygons joined by n adjacent rectangles, is internally cut by all the planes defined by any three of its vertices.at n=29A338801