27806

Appears in sequences

• Number of tilings of 2 X n rectangle with polyominoes, each of which has area = # of adjacent polyominoes.at n=19A044043
• Number of partitions of n with nonnegative crank.at n=42A064428
• Number of different patterns of n-motifs.at n=6A099032
• Semiprimes in A033951.at n=24A113691
• Total number of Fibonacci parts in all partitions of n.at n=27A144115
• Number of -7..7 arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.at n=2A200552
• T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.at n=38A200553
• Number of -n..n arrays x(0..4) of 5 elements with zero sum and nonzero second differences.at n=6A200555
• Expansion of Product_{k>=1} ((1 + x^k) / (1 + x^(2*k)))^k.at n=24A285289