42225

Appears in sequences

• a(n) = (5*n^2 + 1)*n^2 / 6.at n=15A008354
• McKay-Thompson series of class 20B for Monster.at n=26A058551
• Number of binary strings of length n with no substrings equal to 0001 0011 or 1000.at n=15A164456
• Number of zero-sum -n..n arrays of 5 elements with first through third differences also in -n..n.at n=15A202513
• a(n) is the number of free polyominoids that have faces aligned to precisely 3 planes.at n=6A385400