2893401

Appears in sequences

• Numbers of form 7^i*9^j, with i, j >= 0.at n=33A025631
• Expansion of (11*x-2)/(1-3*x)^2.at n=11A053566
• Squares whose digits can be arranged in increasing cyclic order - to form a substring of 123456789012345678901234567890...at n=17A068708
• Perfect powers (index > 1) whose digits can be arranged in ascending order or as a substring of 123456789012345678901234567890123...at n=20A076966
• Smallest number having n divisors ending with 1 or 9.at n=16A085645
• Triangle T(n, k) = (-1)^n*StirlingS2(n, k)*StirlingS2(n, n-k), read by rows.at n=40A155999
• Numbers with 33 divisors.at n=17A175743
• a(n) is the least number with exactly n divisors of the form 4*k+1.at n=16A364584
• a(n) is the smallest nonnegative integer k where there are exactly n nonnegative integer solutions to x^2 + 5*y^2 = k.at n=17A374288
• Odd squares k, multiples of 3 and non-multiples of 5, such that sigma(k)/k >= 5/3.at n=37A388016