27894

Appears in sequences

• Numbers having four 6's in base 8.at n=15A043448
• Barely abundant numbers: abundant n such that sigma(n)/n < sigma(m)/m for all abundant numbers m<n, sigma(n) being the sum of the divisors of n.at n=36A071927
• Number of partitions of n into 9 parts such that every i-th smallest part (counted with multiplicity) is different from i.at n=21A244245
• Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and column sum 1 3 6 or 8 and every diagonal and antidiagonal sum not 1 3 6 or 8.at n=13A252008
• a(n) is the number of unlabeled rank-3 graded lattices with 4 coatoms and n atoms.at n=34A322599
• a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero icosahedral numbers in exactly n ways, or -1 if no such integer exists.at n=21A360215