103455

Appears in sequences

• Numbers k such that both k and k+1 are abundant.at n=27A096399
• Numbers k such that both sigma(k) >= 2*k-1 and sigma(k+1) >= 2*(k+1)-1.at n=29A103289
• Odd admirable numbers: such that sigma(n) = 2n + 2d for some d | n.at n=17A109729
• Expansion of g.f. x*(1-3*x-8*x^2)/(1+5*x^2-32*x^4).at n=12A152269
• Number of n X n arrays of squares of integers with every 3X3 subblock summing to 8.at n=3A159208
• Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 8.at n=1A159374
• Number of n-bit binary strings in which the length of any run of ones is a power of two.at n=18A253511
• Least odd primitive abundant number having its prime signature.at n=15A316116
• Numbers k such that both k and k+1 are Zumkeller numbers (A083207).at n=25A328327
• Primitive abundant numbers for which there is no smaller primitive abundant number having the same ordered prime signature.at n=27A357921