7845601

Appears in sequences

• Squares which are palindromes in base 7.at n=30A029993
• Base-7 representation of a(n) is the concatenation of the base-7 representations of 1, 2, ..., n, n-1, ..., 1.at n=5A260857
• Numbers that decrease two times in succession when they are iteratively replaced by the "Look and Say" description (cf. A045918) of their prime factors, counted with multiplicity.at n=24A379455