28662

Appears in sequences

• a(n) = round(n*phi^14), where phi is the golden ratio, A001622.at n=34A004949
• a(n) is a non-palindromic composite located between twin primes whose reverse, which is less than it, is also located between twin primes.at n=24A103741
• Elements of A103741 that do not terminate in a zero digit.at n=6A103764
• Descending dungeons: for definition see Comments lines.at n=18A121295
• a(1)=2. For n >=2, a(n) = the least integer >= a(n-1) that is not coprime to both a(n-1)+1 and a(n-1).at n=33A140525
• a(n) = Fibonacci(n) + 5.at n=23A157729
• Expansion of 2*x^4*(1-2*x+x^4)/((1+x)*(1-2*x)^2*(1-x-x^2)).at n=16A219752
• Number of n X 3 0..1 arrays with rows and antidiagonals unimodal and columns nondecreasing.at n=33A224141
• Triangle read by rows: TR(m,n) is the Wiener index of the hexagonal trapezium T(m,n), defined in the He et al. reference (1 <= n <= m).at n=33A248095
• Number of partitions of prime(n) into n primes.at n=39A259254
• Expansion of psi(x^4) / chi(-x)^2 in powers of x where psi(), chi() are Ramanujan theta functions.at n=31A260599
• Number of (n+2) X (2+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00001011 00010101 or 01010101.at n=12A261374
• Expansion of 1/(1 - x^3*(1 + x)^4).at n=20A375318
• Expansion of 1 / ((1-x)^3 - x^7).at n=22A392544