801230

Appears in sequences

• Number of binary strings of length n with no substrings equal to 0000 or 0011.at n=23A164388
• Number of sequences of n coin flips that win on the last flip, if the sequence of flips ends with (0,0,1,1).at n=26A199925
• Number of length-n binary words having exactly one nontrivial palindrome prefix.at n=20A308529