257985

Appears in sequences

• a(n) = (2^n - 1)*(4^n - 1).at n=6A060242
• 58 'Reverse and Add' steps are needed to reach a palindrome.at n=24A065323
• Numbers n which when converted to base 8, reversed and converted back to base 10 yield a number m such that n mod m = 0. Cases which are trivial or result in digit loss are excluded.at n=19A091082
• Product of the anti-divisors of n.at n=29A091507
• Denominators of n divided by the product of the anti-divisors of n.at n=29A093396
• Inverse modulo 2 binomial transform of 8^n.at n=6A100741
• a(n) = (n-1)*n*(n+1)*(n+2)*(2n+11)/120.at n=25A130857
• Eigentriangle of A085478: T(n,k) = A085478(n,k) * A125273(k).at n=51A144250
• Denominators of coefficients in asymptotic expansion of M_n (number of monolithic chord diagrams, A280775).at n=14A280779
• a(n) is the least integer that can be expressed as the difference of two hexagonal numbers in exactly n ways.at n=13A334035
• a(n) is the least number with exactly n divisors of the form 4*k+3.at n=28A364585