61449

Appears in sequences

• Numbers of the form k + wt(k) for exactly four distinct k, where wt(k) = A000120(k) is the binary weight of k.at n=7A227915
• Construct a hollow square of 1's of side n and fill its interior with 0's to create a stack of n binary numbers. Express the sum of the stack in decimal.at n=12A269059
• Number of permutations of [n] avoiding {4213, 1432, 1324}.at n=11A294767