3828825

Appears in sequences

• a(n) = binomial(n+4,4)*(2*n+1).at n=32A051880
• Highly composite odd numbers: odd numbers where d(n) increases to a record.at n=24A053624
• Boundaries of primorial intervals [1,3]; [3,9],[9,15]; [15,45], etc.at n=32A065917
• Integers that can be expressed as a product of triangular numbers in 3 different ways.at n=25A110904
• Odd numbers k such that k and phi(k) have the same number of divisors.at n=16A116518
• Oddly superabundant numbers: odd n with sigma(n)/n > sigma(k)/k for all odd k < n.at n=21A119239
• Terms in A038547 where prime signature differs from that of corresponding term in A005179.at n=9A122814
• Row sums of triangle A128592.at n=8A128595
• Numerators of rationals r(n) related to the z-sequence of the Sheffer matrix A060821 for Hermite polynomials.at n=8A130187
• Smallest odd number with same number of divisors as 3*a(n-1).at n=17A140864
• Numbers with exactly 6 distinct odd prime divisors {3,5,7,11,13,17}.at n=7A147579
• Smallest number having exactly n divisors of the form 8*k + 7.at n=36A188226
• a(n) = numerator(hypergeom([-n, 1/2], [1], 1)*hypergeom([-floor(n/2), (-1)^n/2], [1], 1)).at n=9A295871
• a(n) is the least integer that can be expressed as the difference of two hexagonal numbers in exactly n ways.at n=33A334035
• Numbers that are not practical (A237287) and have more divisors than any smaller number that is not practical.at n=23A335029
• Primorial inflation of n prime shifted once: a(n) = A003961(A108951(n)).at n=38A337471
• Smallest number having exactly n divisors of the form 8*k + 3.at n=36A343105
• Smallest number having exactly n divisors of the form 8*k + 5.at n=36A343106
• Positions of records in A188169.at n=19A343134
• Positions of records in A188170.at n=18A343135