40304

Appears in sequences

• Palindromes that start with 4.at n=25A043039
• Numbers that are palindromic, divisible by 11 and have an odd number of digits.at n=35A045571
• Palindromes with exactly 6 prime factors (counted with multiplicity).at n=16A046332
• a(n) is the smallest palindrome > a(n-1) such that a(1)+a(2)+...+a(n) is a prime.at n=28A051934
• Multiples of 11 with digit sum 11, with no zero digits in odd places.at n=34A083512
• Palindromes in A083512.at n=3A083513
• Palindromic primes in base 5 (written in base 5).at n=20A117700
• Biquadrateful (i.e., not biquadrate-free) palindromes.at n=23A133514
• Triangle T(n, k) = n*( (n-1)! - (k-1)! ), read by rows.at n=30A137259
• Palindromes that are the sum of two positive cubes.at n=14A162710
• Palindromes m such that m*(sum of digits of m) is also a palindrome.at n=37A229805
• a(n) = n! - 2*n.at n=8A242569
• a(n) = n*(n + 1)*(7*n + 5)/6.at n=32A304993
• Number of even parts in the partitions of n into 8 parts.at n=49A309630
• a(n) = 8*7*6*5*4*3*2*1 - 16*15*14*13*12*11*10*9 + 24*23*22*21*20*19*18*17 - ... + (up to the n-th term).at n=8A319891
• E.g.f.: 2*cosh(1) - Sum_{n>=0} (1 + x^n)^n * exp(-x^n) / n!.at n=9A326426
• Palindromes that are multiples of 11 and whose digit sum is also a multiple of 11.at n=11A346221
• Nonprime base-10 palindromes whose arithmetic derivative is a base-10 palindrome.at n=27A363248