54292

Appears in sequences

• a(n) = Sum_{k=0..n} (k+1) * A026659(n,k).at n=12A026980
• Site series for first parallel moment of Kagome lattice.at n=16A120550
• Number of squares (of nonnegative integers) that require n binary (base-2) digits.at n=35A126726
• a(n) is the ceiling of 2^n * (sqrt(2)-1), i.e., a(n)-1 is the number whose binary representation gives the first n bits of sqrt(2)-1.at n=16A136322
• Triangle T_3(n, m), the number of surjective multi-valued functions from {1, 1, 1, 2, 3, ..., n-2} to {1, 2, 3, ..., m} by rows (n >= 1, 1 <= m <= n).at n=39A172107
• Number of triangular numbers T(k) between powers of 2, 2^(n-1) < T(k) <= 2^n.at n=34A190660
• Values of terms in A380837 which are not in A379066.at n=21A380838
• G.f. A(x) satisfies: A(x)^2 = A( (x + 4*A(x)^2)^2 ).at n=5A386667