24816

Appears in sequences

• Replace n with concatenation of its divisors >1.at n=15A037277
• If n is composite, replace n with the concatenation of its nontrivial divisors, otherwise a(n) = n.at n=31A037279
• a(n) = n*(7*n^2-4)/3.at n=22A063521
• A sequence generated from a 4th degree Pascal's Triangle polynomial.at n=15A095265
• a(n) is the concatenation of its nontrivial divisors.at n=31A106708
• Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and have k pyramids of the first kind (a pyramid of the first kind is a sequence u^pd^p for some positive integer p, starting at the x-axis).at n=21A108451
• Number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and having no pyramids of the first kind (a pyramid of the first kind is a sequence u^pd^p for some positive integer p, starting at the x-axis).at n=6A108452
• 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, -1, 1), (-1, 1, 0), (0, 0, -1), (1, 0, 0)}.at n=12A148015
• Leading column of triangle in A176463.at n=17A176503
• Expansion of g.f. A(x) satisfying A(x) = A(x^3 + x^4) / A(x^2).at n=42A372529
• a(n) is the number of 5 element sets of distinct integer-sided trapezoids each of area less than 3*n^2 whose base angles are 60 degrees that fill a regular hexagon of side n units.at n=33A390763