79872

Appears in sequences

• Coefficients of Chebyshev polynomials: n*(2*n+1) * 4^(n-1).at n=5A002700
• Degrees of irreducible representations of Suzuki group Suz.at n=28A003902
• Expansion of Product_{m>=1} (1+x^m)^4.at n=19A022569
• Numbers k such that k divides the (right) concatenation of all numbers <= k written in base 25 (most significant digit on right).at n=26A029518
• a(n) = 2^(n-2)*binomial(n+1,2).at n=10A052482
• Triangle of coefficients of Chebyshev's U(n,2*x-1) polynomials (exponents of x in increasing order).at n=33A053124
• Triangle of coefficients of Chebyshev's U(n,2*x-1) polynomials (exponents of x in decreasing order).at n=30A053125
• 13-almost primes (generalization of semiprimes).at n=21A069274
• Binomial transform of A073145: a(n)=Sum(binomial(n,k)*A073145(k),(k=0,..,n)).at n=26A075115
• Sequence associated with a(n) = 2*a(n-1) + k*(k+2)*a(n-2).at n=11A080929
• Triangle: row #n has n+1 terms. T(n,m) = 4^m (2n+1)! / ( (2n-2m)! (2m+1)! ).at n=26A085841
• Product of iterated phi(n).at n=52A092694
• Triangle of column sequences with a certain o.g.f. pattern.at n=39A112500
• Fourth column of triangle A112500.at n=5A112503
• a(n) = floor(2^(n-2)*3*n).at n=12A128543
• Numbers k such that (number of prime factors of k counted with multiplicity) less (number of distinct prime factors of k) = 10.at n=29A195069
• Triangle read by rows, T(n, k) = 4^k*S_4(n, k) where S_m(n, k) are the Stirling-Frobenius subset numbers of order m; n >= 0, k >= 0.at n=26A225467
• Triangle read by rows, 4^k*s_4(n, k) where s_m(n, k) are the Stirling-Frobenius cycle numbers of order m; n >= 0, k >= 0.at n=26A225478
• T(n,k) = number of defective 3-colorings of an n X k 0..2 array connected horizontally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.at n=34A229694
• Number of defective 3-colorings of a 7 X n 0..2 array connected horizontally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.at n=1A229700