28660

Appears in sequences

• Smallest nonsquarefree integer > the n-th term of the Fibonacci sequence.at n=22A114555
• Numbers m such that m + sigma(m) is a repdigit.at n=19A116017
• Irregular array where the n-th row are the divisors, not occurring earlier in the sequence, of the sum of the terms in all previous rows. a(1)=5.at n=32A120579
• a(n) = Fibonacci(n) + 3.at n=23A157726
• a(n) = a(n-1) + Fibonacci(n), a(1)=5.at n=20A169622
• Number of strictly increasing arrangements of n nonzero numbers in -(n+3)..(n+3) with sum zero.at n=8A188118
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w^3<x^3+y^3.at n=36A211801
• Expansion of Product_{k>=1} (1 + x^(2*k-1))^(2*k-1).at n=30A262736
• Expansion of Product_{k>=1} (1 - x^(2*k-1))^(2*k-1).at n=30A285069