40733

Appears in sequences

• Expansion of (1-x)^(-3) * (1-x^2)^(-2).at n=41A002624
• a(n) = n*(n+1)*(n+2)^2/6.at n=21A004320
• Number of maximal primitive subsets of {1..n}.at n=50A326077
• a(n) is the number of subsets of {1..n} that contain exactly 1 odd and 3 even numbers.at n=46A330299
• Evaluation of the Motzkin polynomials at -1/2 and normalized with (-2)^n.at n=8A330800
• Positive numbers k such that -k, -(k + 1), -(k + 2), and -(k + 3) are 4 consecutive negative negabinary-Niven numbers (A331728).at n=18A331825
• a(n) is the number of subsets of {1..n} that contain exactly 3 odd and 1 even numbers.at n=46A333319
• Numbers whose prime factors counted with multiplicity satisfy: (maximum) - (minimum) = (mean).at n=28A362268
• Numbers k such that one can make an equilateral triangle from a chain of linked rods of length 1, 2, 3, ..., k, with perimeter equal to the total length.at n=35A382632