1040319

Appears in sequences

• Numbers that are palindromic in bases 2 and 6.at n=21A182233
• Hilltop maps: number of n X 2 binary arrays indicating the locations of corresponding elements not exceeded by any king-move neighbor in a random 0..3 n X 2 array.at n=9A218236
• Array read by antidiagonals: T(m,n) read in binary is a palindrome with m runs of n ones separated by single zeros.at n=30A249544