61716

Appears in sequences

• a(n) = (n+2)*2^(2*n-1) - (n/2)*binomial(2*n,n).at n=7A003583
• Base-10 palindromes that start with 6.at n=39A043041
• a(n) is the smallest palindrome > a(n-1) such that a(1)+a(2)+...+a(n) is a prime.at n=31A051934
• Palindromes whose product of digits are palindromes with at least two digits.at n=6A309787
• Start with a 2 X n array of squares, join every vertex on top edge to every vertex on bottom edge; a(n) = one-half the number of cells.at n=29A355902
• a(n) is the n-digit denominator of the fraction h/k with h and k coprime palindrome positive integers at which abs(h/k-e) is minimal.at n=5A368619