54608

Appears in sequences

• T(n,k) = total area of all squares and rectangles of area 2^(k-1) after 2^n stages in the toothpick structure of A139250, n>=1, k>=1, assuming the toothpicks have length 2. Triangle read by rows.at n=38A211017
• Numbers k such that (19*10^k + 161)/9 is prime.at n=24A275323
• Number of triangular regions in a "frame" of size n X n (see Comments in A331776 for definition), divided by 4.at n=27A332595