27654

Appears in sequences

• a(n)^3 is smallest cube containing exactly n 2's.at n=6A048367
• Number of (n+1)X(n+1) 0..2 arrays with every 2X3 or 3X2 subblock having exactly three clockwise edge increases.at n=2A206064
• Number of (n+1) X 4 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly three clockwise edge increases.at n=2A206067
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X3 or 3X2 subblock having exactly three clockwise edge increases.at n=12A206072
• Number of length n+2 0..5 arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=12A248430
• Numbers n whose sum of divisors equals the sum of divisors of 2n+1.at n=13A272553
• Numbers k such that (16*10^k - 91)/3 is prime.at n=25A274336
• Number of sets of exactly n positive integers <= n+10 having a square element sum.at n=12A281973
• Numbers n such that usigma(n) = usigma(2*n+1) where usigma(n) = A034448(n).at n=5A286837
• Irregular triangle read by rows: normalized dimensions of certain generalized quadratic residue codes of length n.at n=40A287879
• G.f.: Sum_{n>=0} x^n * (1 + x^n)^n / (1 + x^(n+1))^(n+1).at n=68A323557