40904

Appears in sequences

• Numbers that are the sum of 7 positive 9th powers.at n=18A003396
• Palindromes that start with 4.at n=31A043039
• a(n) = Sum_{ r = 0 to n} L(n,r), where L(n,r) (A067049) = lcm(n, n-1, n-2, ..., n-r+1)/lcm(1, 2, 3, ..., r).at n=17A061297
• Numbers that are palindromic in base 2 as well as in base 10 (initial zeros may be prepended).at n=48A069024
• a(n) is the odd-length palindrome whose digits up to the center are those of n and whose center digit is equal to the digital root of the product of the factorial of n and the reverse of n.at n=39A082941
• Binomial transform of [1, 1, 5, 5, 5, ...].at n=13A131064
• Number of multisets {1^k1, 2^k2, ..., n^kn}, ki >= 0, with the sum of reciprocals <= 1.at n=13A212658