72373

Appears in sequences

• E.g.f. -log(sech(x) - log(x+1)).at n=9A013558
• a(n) = Sum_{k=0..n} T(n,k) * T(n,2n-k), with T given by A027082.at n=9A027104
• Numbers n > 13 such that x^n + x^13 + x^12 + x^11 + x^10 + x^9 + x^8 + x^7 + x^6 + x^5 + x^4 + x^3 + x^2 + x + 1 is irreducible over GF(2).at n=43A057489
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (1, -1, -1), (1, 0, -1), (1, 1, 1)}.at n=9A149603