20702

Appears in sequences

• a(0) = 1, a(n) = 23*n^2 + 2 for n>0.at n=30A010013
• Convolution of Lucas numbers and A014306.at n=19A023624
• Base-10 palindromes that start with 2.at n=29A043037
• Numbers that are palindromic, divisible by 11 and have an odd number of digits.at n=17A045571
• Palindromic even numbers with an odd number of distinct prime factors.at n=23A075809
• Palindromic even numbers with exactly 3 prime factors (counted with multiplicity).at n=26A075816
• Palindromes divisible by their digit sum.at n=44A082232
• n-th largest palindrome whose digit sum is n.at n=10A082265
• Multiples of 11 with digit sum 11, with no zero digits in odd places.at n=23A083512
• Palindromes in A083512.at n=1A083513
• Palindromic numbers with property that sum of digits is prime and number of prime digits is prime.at n=28A093807
• Palindromes n such that 10n01 is a prime.at n=36A099744
• Terms in A112039 that are divisible by 3, divided by 3.at n=32A112040
• Floor(n*exp(cot n)).at n=40A134897
• Number of partitions of n into as many primes as nonprimes.at n=53A155515
• Vertex number of a rectangular spiral related to Fibonacci numbers and prime numbers. The distances between nearest edges of the spiral that are parallel to the initial edge are the Fibonacci numbers, while the distances between nearest edges perpendicular to the initial edge are the prime numbers.at n=37A160794
• Dates after Jan 01 00 in chronological order which are palindromic when they are written in the format D.M.YY. The terms are listed as numbers (without the dots).at n=16A210890
• Dates after Jan 01 00 in chronological order which are palindromic when they are written in the format D.M.YY. The terms are listed as numbers. Leading zeros of the terms are suppressed.at n=16A210892
• Palindromes m such that m*(sum of digits of m) is also a palindrome.at n=30A229805
• G.f. = b(2)*b(6)/(x^6-x^4+x^2-2*x+1), where b(k) = (1-x^k)/(1-x).at n=20A266336