21062

Appears in sequences

• Convolution of natural numbers with (1, p(1), p(2), ... ), where p(k) is the k-th prime.at n=33A023538
• Decimal part of n^(1/11) starts with a 'nine digits' anagram.at n=7A034286
• Multiplicity of highest weight (or singular) vectors associated with character chi_66 of Monster module.at n=40A034454
• Numerators of continued fraction convergents to sqrt(709).at n=7A042364
• Numerators of convergents to Khinchin's constant.at n=10A127005
• The number of n-digit numbers requiring 2 nonzero squares in their representation as sum of squares.at n=4A180426
• Number of strings of numbers x(i=1..7) in 0..n with sum i^2*x(i)^2 equal to n^2*49.at n=17A184245
• a(n) = A001209(n) + 1.at n=35A196069
• T(n,k)=Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-k-1.at n=39A211963
• Number of partitions of n into at most 1^2 copy of 1, 2^2 copies of 2, 3^2 copies of 3, ... .at n=45A303944
• a(n) is the number of ways to express 2*n+1 as a sum of parts x such that x+2 is an odd prime.at n=43A333615
• Array read by antidiagonals: T(n,k) (n>=1, k>=1) = number of ways to select four points from an n X k grid so that they form a convex quadrilateral.at n=58A334711
• Array read by antidiagonals: T(n,k) (n>=1, k>=1) = number of ways to select four points from an n X k grid so that they form a convex quadrilateral.at n=62A334711
• Positive numbers whose square starts and ends with exactly 44, and no 444.at n=7A348831