41720

Appears in sequences

• Triangle T(n,k)=number of forests of labeled rooted trees of height at most 1, with n labels and k nodes, where any root may contain >= 1 labels, n >= 0, 0<=k<=n.at n=41A143397
• Nonunitary weird numbers: numbers that are nonunitary abundant but not nonunitary pseudoperfect.at n=7A327948
• Number of compositions of n where each part after the first is either twice, half, or equal to the prior part.at n=22A342340