23176

Appears in sequences

• Number of binary strings of length n with no substrings equal to 0001 or 0111.at n=19A164397
• Partial sums of floor(Fibonacci(n)/2).at n=22A178982
• Number of 4-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=28A187174
• Multiply a(n-1) by 2 and drop all 0's.at n=24A242350