151470

Appears in sequences

• Let a,b,c,...k be all divisors of n; a(n) = (a+1)*(b+1)*...*(k+1).at n=31A020696
• Number of totally isotropic spaces of index n in orthogonal geometry of dimension 2n.at n=6A028361
• a(n) = Product_{k>=0} (1 + floor(n/2^k)).at n=32A132269
• a(n) is smallest number with divisors which are congruent to 1, 2, ..., n-1 mod n.at n=33A140539
• a(n) is the least positive number whose divisors have all possible residues mod n.at n=33A280171
• Obverse convolution (2n+1)**(2^n); see Comments.at n=4A374869
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = 2^n x and t(x) = x+1. See Comments.at n=26A375044
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = 2^n and t(x) = 2x+1. See Comments.at n=20A375045
• a(n) = (1/(n+1)) * Sum_{k=0..n} (k+1)^4 * binomial(2*n-k,n-k).at n=8A390963