16773121

Appears in sequences

• Cyclotomic polynomials at x=8.at n=24A019326
• a(n) = 4^n - 2^n + 1.at n=12A020515
• 12th cyclotomic polynomial evaluated at powers of 2.at n=6A020520
• a(n) = n^6 - n^3 + 1.at n=16A060891
• a(n) = n^8 - n^4 + 1.at n=8A060893
• a(n) = n^12 - n^6 + 1.at n=4A060896
• Numbers of the form 2^k+1 or 4^k-2^k+1.at n=35A064386
• a(1) = 1. a(n) = the smallest integer >=2 such that (product{k=1 to n} a(k)) in binary is a palindrome.at n=14A143015
• Numbers k (between 2^(m-1) and 2^m) such that 2^(k-1) == 1 (mod k) and 2^(k-1-m) == k - 2^p (mod k) for some p > 0 with 2^p < k.at n=35A167612
• Numbers that are both Poulet and Proth.at n=10A242880
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 237", based on the 5-celled von Neumann neighborhood.at n=23A287079
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 587", based on the 5-celled von Neumann neighborhood.at n=23A289533
• Integers of the form (2^x + 1) / (2^y + 1).at n=35A370425