20802

Appears in sequences

• a(0) = 1, a(n) = 13*n^2 + 2 for n>0.at n=40A010004
• Number of partitions of 5n such that cn(0,5) <= cn(1,5) = cn(4,5) < cn(2,5) = cn(3,5).at n=12A036883
• Base-10 palindromes that start with 2.at n=30A043037
• Palindromes that are divisible by 6.at n=31A045641
• Palindromes expressible as the sum of 2 consecutive palindromic primes.at n=5A046490
• Palindromic untouchable numbers.at n=22A048187
• Numbers n such that 215*2^n-1 is prime.at n=25A050859
• Palindromes that are the sum of consecutive initial odd composites.at n=4A058850
• Numbers which are the sum of their proper divisors containing the digit 4.at n=31A059463
• Palindromic even numbers with an odd number of distinct prime factors.at n=24A075809
• Palindromic even numbers with exactly 3 prime factors (counted with multiplicity).at n=27A075816
• Palindromic abundant numbers.at n=44A098775
• Number of products of factorials not exceeding n!.at n=23A101976
• Palindromic admirable numbers.at n=9A109759
• Numbers k such that the sum of the first k odd composites is palindromic in base 3.at n=6A118129
• 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=17A210890
• 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=17A210892
• Number of non-equivalent binary n X n matrices with two nonadjacent 1's.at n=23A232567
• Numbers k such that sum of divisors of k is a square and a triangular number (A000217). That is, numbers k such that A000203(k) is in A001110.at n=3A232847
• Partial sums of A299254.at n=23A299260