35721

Appears in sequences

• a(n) = Sum_{k=1..n-1} k^3*sigma(k)*sigma(n-k).at n=8A000499
• Numbers of the form 3^i*7^j with i, j >= 0.at n=33A003594
• a(n) = |1^3 - 2^3 + 3^3 - 4^3 + ... + (-1)^(n+1)*n^3|.at n=41A011934
• Triangle of coefficients in expansion of (3+7x)^n.at n=29A013624
• Squares of odd heptagonal numbers.at n=4A014773
• a(n) = (2*n - 5)n^2.at n=27A015240
• a(n) = (5*n + 4)^2.at n=37A016898
• a(n) = (6*n+3)^2.at n=31A016946
• a(n) = (7*n)^2.at n=27A016982
• a(n) = (8*n + 5)^2.at n=23A017126
• a(n) = (9*n)^2.at n=21A017162
• a(n) = (10*n + 9)^2.at n=18A017378
• a(n) = (11*n + 2)^2.at n=17A017414
• a(n) = (12*n + 9)^2.at n=15A017630
• Numbers of form 7^i*9^j, with i, j >= 0.at n=18A025631
• Numbers that are both lucky and square.at n=31A031162
• Squares of lucky numbers.at n=36A032598
• a(n) = (2*n+1)*(11*n+1).at n=40A033575
• Numbers whose prime factors are 3 and 7.at n=18A033850
• Odd refactorable numbers.at n=22A036896