122211

Appears in sequences

• a(n) = self-convolution of row n of array T given by A027023.at n=9A027040
• n expressed in Fibonacci binary-like number system using only 1's and 2's.at n=25A108960
• Factorial codes for the fixed points of the square of Vaillé's 1997 bijection on Dyck paths.at n=12A126299
• Triangle read by rows in which row n lists the binary words of length n over the alphabet {1,2} with no initial repeats.at n=32A211029
• List of words over {1,2} with equal numbers of 1's and 2's.at n=17A214218
• Elements of the Motzkin words sub-operad Motz of TN generated by 00 and 010.at n=32A231872