59701

Appears in sequences

• a(n) = least semiprime with factors not previously used containing integers 2n and 2n+1 as substrings.at n=13A086887
• Expansion of 1/((1-x)^3 - 9*x^4)^(1/3).at n=15A098536
• Brilliant numbers (A078972) whose digit reversal is a pentagonal number (A000326).at n=12A115679
• E.g.f. satisfies A(x) = exp( x * (1+x)^2 * A(x)^2 ).at n=5A362774