29393

Appears in sequences

• Numerator of n!!/(n+3)!!.at n=21A004732
• a(n) = floor( binomial(n,9)/10 ).at n=21A011846
• Numbers k such that sigma(k) = sigma(k+4).at n=26A015863
• a(n) = 2^n - n^3.at n=15A024013
• a(n) = floor( binomial(n, floor(n/2))/(1 + ceiling(n/2)) ) (interpolates between Catalan numbers).at n=21A028303
• a(n) = ceiling( binomial(n, floor(n/2))/(1 + ceiling(n/2)) ) (interpolates between Catalan numbers).at n=21A028304
• Gaps of 9 in sequence A038593 (lower terms).at n=21A038657
• Numerators of coefficients of 1/2^(2n+1) in Newton's series for Pi.at n=13A054387
• Expansion of (1+3*x+9*x^2+12*x^3+11*x^4+3*x^5+x^6)/((1-x)^2*(1-x^2)^2*(1-x^3)).at n=20A055383
• Numbers n such that phi(reverse(n)) = phi(reverse(n-1)) + phi(reverse(n-2)).at n=24A069969
• Determinant of n X n matrix whose element A(i,j) is 1 if i=j, i if n=i+j and 0 otherwise.at n=8A071999
• Numerator of Catalan(n)/2^(2n+1). Also, numerators of (2n-1)!!/(n+1)!. Odd part of the n-th Catalan number.at n=11A098597
• Table of denominators of coefficients of certain rational polynomials.at n=77A101025
• Divide n! repeatedly by i! for i from floor(n/2) down through 2; a(n) = remaining quotient.at n=22A111866
• Denominator of 1^n/n + 2^n/(n-1) + 3^n/(n-2) + ... + (n-1)^n/2 + n^n/1.at n=20A120487
• Catalan numbers halved and rounded to the next integer.at n=11A130380
• Numerator of moments of Chebyshev U- (or S-) polynomials.at n=22A134828
• Multiples of 1729, the Hardy-Ramanujan number.at n=17A138129
• Denominator the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=16.at n=10A145640
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (1, -1, 1), (1, 1, 0)}.at n=10A148699