27984

Appears in sequences

• Number of prime powers of prime numbers less than 10^n.at n=10A076700
• Row sums of A083764.at n=7A083766
• Number of compositions of n with first part 3 and no equal adjacent parts; this is column 3 of the array in A096568.at n=22A096571
• Number of benzenoids with 22 hexagons, C_(2v) symmetry and containing n carbon atoms.at n=19A123106
• Values of z in solutions (x,y,z) to the Diophantine equation x^3-x^2+y^3-y^2=z^3-z^2, with 1<x<y<z arranged in order of increasing x.at n=33A138669
• Numbers n such that n contains exactly 5 digits, all distinct, and n^2 contains exactly 9 distinct digits.at n=25A204691
• Number of length 4+1 0..n arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=8A250169
• Irregular triangle read by rows: T(n,k) = number of ways k brooks (0 <= k <= 2n+1) can be placed on the grid points of an n triboard so that no two brooks lie in the same straight line.at n=40A260333
• G.f.: Re(1/(1 + i*x/(1 + i*x^2/(1 + i*x^3/(1 + i*x^4/(1 + i*x^5/(1 + ...))))))), a continued fraction, where i is the imaginary unit.at n=49A293268
• Sum of the fifth powers of the parts in the partitions of n into two distinct parts.at n=7A294300