79233

Appears in sequences

• cosh(arctanh(x)*exp(x))=1+1/2!*x^2+6/3!*x^3+33/4!*x^4+180/5!*x^5...at n=8A012718
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant = 0 (mod 3).at n=20A210698
• Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant = 0 (mod 3).at n=20A211033
• 3-parking triangle T(r, i, 3) read by rows: T(r, i, k) = (r + 1)^(i-1)*binomial(k*(r + 1) + r - i - 1, r - i) with k = 3 and 0 <= i <= r.at n=25A329059
• G.f. A(x) satisfies A(x) = ( 1 + 49*x*A(x)^6 )^(1/7).at n=4A385207
• Numbers k with canonical prime factorization k = p1^e1*p2^e2*p3^e3 such that the points (p1, e1), (p2, e2) and (p3, e3) form a nondegenerate integer-sided triangle.at n=0A387586