28603

Properties

Appears in sequences

• a(n) = n^4 + (9/2)*n^3 + n^2 - (9/2)*n + 1.at n=12A003878
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 100 ones.at n=25A031868
• Primes occurring in A084704 exactly 4 times.at n=12A128655
• a(n) = 4*n^4 + 3*n^3 + 2*n^2 + n + 1.at n=9A130886
• Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation.at n=10A147154
• Numerator of the 2n-th raw moment for distribution of distances between two points picked at random in the interior of a unit cube.at n=7A160693
• Primes p such that 2*p^3 -+ 3 are also prime.at n=26A174363
• Primes of the form n^2+42.at n=23A174812
• Expansion of series_reversion( x/(1+x^4*sum(k>=0, x^k)) ) / x.at n=21A215341
• Numbers that are the smallest of four consecutive primes, no three of which sum to a nonprime.at n=11A298763
• G.f. satisfies A(x) = (1 + x) * (1 + x*A(x)^6).at n=5A364339
• Expansion of 1/sqrt( (1-x) * (1-x-4*x^2)^3 ).at n=10A383499
• Prime numbersat n=3113