69996

Appears in sequences

• Number of regions in regular n-gon with all diagonals drawn.at n=37A007678
• Numbers k such that k*(k+8) is a palindrome.at n=21A028567
• Sum of partial sums of partition numbers (A026905) and partial sums of numbers of partitions into distinct parts (A026906).at n=33A056871
• Smallest palindrome with digit sum = n.at n=39A062388
• Palindromes k such that k + 11 is also a palindrome.at n=29A082275
• 5-almost primes with semiprime digits (digits 4, 6, 9 only).at n=28A111697
• Indices k such that 19 plus the k-th triangular number is a perfect square.at n=11A154147
• Smallest palindrome which has multiplicative persistence n.at n=6A201991
• Palindromic in base 10 and 18.at n=23A248889
• Smallest multiple of n whose sum of digits is greater than n.at n=37A269332
• a(n) = Sum_{k=1..n} k^2 * floor(n/k)^3.at n=27A350124