25449

Appears in sequences

• Expansion of e.g.f. 1/sqrt(1-8x+x^2).at n=4A006438
• Numbers k such that T(k) = T(A072522(k)) + T(A072522(k+1)), T(i) being the triangular numbers.at n=28A080824
• Number of ways to reciprocally link elements of an n X 6 array either to themselves or to exactly two horizontal and antidiagonal neighbors, without consecutive collinear links.at n=7A220706
• E.g.f.: Product_{k>=1} (1 + (exp(x) - 1)^k)^(1/k!).at n=8A345757