65934

Appears in sequences

• Numbers n such that two applications of 'Reverse and Subtract' lead to n, whereas one application does not lead to n.at n=3A072141
• Numbers k for which the quotient q(k)=(k+rev(k))/abs(k-rev(k)) is an integer.at n=26A087993
• Numbers n such that reversal(n)=2n/3.at n=2A101704
• Non-palindromes in A110751; that is, non-palindromic numbers n such that n and R(n) have the same prime divisors, where R(n) = digit reversal of n.at n=14A110819
• The hyper-Wiener index of the ortho-polyphenyl chain with n hexagons (see the Dou et al. and the Deng references).at n=8A216109
• T(n,k)=Number of nXk 0..3 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.at n=47A231108
• Number of 3Xn 0..3 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.at n=7A231109
• a(n) is the smallest even k >= 2 such that the first n multiples of k have the same sum of digits, but (n + 1)*k has a different one. a(n) = 0 if no such k exists.at n=30A237994
• a(n) is the smallest k > 0 such that the first n multiples of k have the same sum of digits, but (n+1)k has a different one. a(n)=0 if no such k exists.at n=30A238088
• a(n) = 3*n*(n^2 + 3*n + 4).at n=27A280304
• Numbers k such that R(k)/k is of the form m/(m + 1), where R(k) is the digital reversal of k.at n=12A376260