19084

Appears in sequences

• Number of planted trees where non-root, non-leaf nodes an even distance from root are of degree 2.at n=17A007562
• Coordination sequence for MgNi2, Position Mg1.at n=34A009936
• McKay-Thompson series of class 26a for Monster.at n=31A058598
• a(n) = number of distinct solutions to equations 1 +- x +- x^2 +- ... +- x^n = 0 over the complex numbers.at n=11A096195
• Sum of the even parts in all partitions of n into distinct parts.at n=39A116684
• Number of binary strings of length n with equal numbers of 00101 and 10101 substrings.at n=15A164249
• Numbers k which use half of the ten digits such that they have at least one factorization k=p*q that uses remaining half of the digits that are not in k.at n=5A195814
• Row sums of triangle A178473.at n=7A203509
• Numbers n = p * q, where n, p, and q together contain all 10 digits at least once.at n=5A253172
• Values n, where n = p * q, and n, p, and q together contain all 10 digits at least once, and no digit is in more than one of n, p or q.at n=5A253173
• Numbers n such that Bernoulli number B_{n} has denominator 1590.at n=29A272140
• Triangle read by rows: T(n,k) is the number of simple graphs on n unlabeled nodes with k simplical vertices, 0 <= k <= n.at n=61A367145
• Numbers k which have a factorization k = f1*f2*...*fr where the digits of {k, f1, f2, ..., fr} together give 0,1,...,9 exactly once.at n=17A370970
• Composite numbers with properties that its digits (which may appear with multiplicity) may not appear in any of its factors (wherein the digits may also appear with multiplicity) and the combined digits of the product and the factors must have at least one of each of the ten digits.at n=33A370972
• Numbers k which have a factorization k = f_1*f_2*...*f_r where f_i >= 1 and the digits of {k, f_1, f_2, ..., f_r} together give 0,1,...,9 exactly once.at n=33A372259
• a(n) is the number of multisets of n decimal digits where the sum of the digits equals the product of the prime digits.at n=25A384445