304877

Appears in sequences

• Integers k such that k^2 is not a palindrome and the square root of the reverse of k^2 yields an integer with the same number of digits as k that is not the reverse of k.at n=9A284986
• Number of rooted trees on n nodes with strictly thinning limbs.at n=26A298304
• a(n)/A002939(n+1) is the Kirchhoff index of the disjoint union of two complete graphs each on n and n+1 vertices with the empty graph on n+1 vertices.at n=25A338588