66493

Appears in sequences

• Indices of centered square numbers (A001844) which are also heptagonal numbers (A000566).at n=4A254229
• In the ternary Pi race between digits zero and one, where the race leader changes.at n=20A278974
• Number of sets of nonempty words with a total of n letters over quinary alphabet containing the fifth letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=7A293886