107415

Appears in sequences

• Triangle of coefficients of a companion polynomial to the Gandhi polynomial.at n=18A083061
• Another version of triangular array in A083061: triangle T(n,k), 0<=k<=n, read by rows; given by [0, 1, 3, 6, 10, 15, 21, 28, ...] DELTA [1, 2, 3, 4, 5, 6, 7, 8, ...] where DELTA is the operator defined in A084938.at n=25A094665
• Smallest term in the Hofstadter sequence A005243 having exactly n representations as sum of consecutive earlier terms.at n=20A118166
• Third right hand column of triangles A094665 and A083061.at n=3A160470
• Triangular array read by rows: T(n,k) is the number of 2-regular labeled graphs on n nodes that have exactly k connected components (cycles); n>=3, 1<=k<=floor(n/3).at n=17A201013
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+3y>0.at n=30A211621
• G.f. satisfies: A(x) = ( x + A(A(x)) )^3 where g.f. A(x) = Sum_{n>=1} a(n)*x^(8*n-5).at n=5A212425
• Number of n-celled quasi still lifes in Conway's Game of Life, up to rotation and reflection.at n=16A330283
• Expansion of x^2*(10-5*x+x^2)/((1-x)^4*(1-x^2)).at n=29A331429
• Number of transitive relations on an n-set with exactly two ordered pairs.at n=22A349919
• Numbers k such that k and k+1 are both products of 2 triangular numbers.at n=22A356748
• a(n) = numerator( [(x*y*z*u)^n] 1/sqrt(1 - (x + y + z + u*(x*y + x*z + y*z))) ).at n=3A381197