18333

Appears in sequences

• T(n, 2*n-3), T given by A027960.at n=45A027965
• McKay-Thompson series of class 19A for Monster.at n=22A058549
• a(n) = (n^3 + 6n^2 - n + 12)/6.at n=46A074742
• Coefficients in quasimodular form F_2(q) of level 1 and weight 6.at n=18A126858
• McKay-Thompson series of class 19A for the Monster group with a(0) = 3.at n=22A136569
• Numbers n such that phi(n)=d_1!!*d_2!!*...*d_k!! where d_1 d_2 ... d_k is the decimal expansion of n.at n=14A139408
• 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, 0), (1, -1, -1), (1, -1, 0), (1, 1, 0)}.at n=9A149125
• Numbers n such that n^2 can be represented as sum of (at least two) consecutive cubes and n is not a triangular number.at n=25A163393
• Number of days after Mar 01 00 such that the date written the format MMDDYY (American standard, short) is palindromic.at n=14A210894
• The stonemason's problem: numbers n such that n^2 is the sum of more than three consecutive cubes, the cube 1 being disallowed.at n=26A238099
• G.f.: 1 + Sum_{n>=1} a(n)*x^n/(1 - x^n) = Product_{n>=1} 1/(1 - x^n)^n.at n=16A300275
• Number of non-isomorphic set multipartitions (multisets of sets) of weight n with no singletons.at n=14A321677
• a(n) is the number of vertices formed by n-secting the angles of a nonagon (enneagon).at n=32A335782