260590

Appears in sequences

• Number of 5-block ordered bicoverings of an unlabeled n-set.at n=12A060093
• Number of nX2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.at n=15A222450
• Expansion of Product_{k>=1} 1/((1 - x^k)*(1 - x^(4*k))).at n=45A318027
• Expansion of e.g.f. 1 / (1 - (exp(x) - 1)^5 / 5!).at n=11A346920