85713

Appears in sequences

• Expansion of e.g.f. log(1+x)/exp(tanh(x)).at n=9A009439
• Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having nonzero determinant, with rows and columns of the latter in lexicographically nondecreasing order.at n=19A227554
• Number of Motzkin trees that are a "uniquely typable skeleton".at n=21A300130
• G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - x * (1 + x) * A(x^2))).at n=14A367713
• Numbers that are a proper substring of the concatenation (with repetition) in decreasing order of their prime factors.at n=5A378950
• Numbers k such that a nonzero proper substring of the concatenation, in decreasing order, of the prime factors of k (without multiplicity) is divisible by k.at n=6A379137