75117

Appears in sequences

• Numerators of approximations to e.at n=31A006258
• Concatenation of the 5 prime factors of composite a(n) is a palindrome.at n=7A046454
• 24 'Reverse and Add' steps are needed to reach a palindrome.at n=53A065318
• Numerators of "Farey fraction" approximations to e.at n=33A119014
• Number of (5+1) X (n+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.at n=25A258558
• Numerators of the other-side convergents to e.at n=13A259589