30004

Appears in sequences

• Numbers n with property that n is a substring of its base 5 representation.at n=19A038105
• Row sums of triangle A145367 (S1hat(-3)) and partition array A145366 (M31hat(-3)).at n=13A145368
• 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, 0), (-1, 1, -1), (-1, 1, 1), (0, 1, 0), (1, 0, 0)}.at n=9A149933
• Number of prime quadruples with smallest member < 2^n.at n=29A215473
• Let x(0)x(1)x(2)... x(q) denote the decimal expansion of n. Sequence lists the numbers n such that the suffix of decimal expansion x(1)x(2)... x(q) is the x(0)-th divisor of n.at n=32A234314
• Consider a number n with m decimal digits. The sequence lists the numbers n having the suffix of length m-1 in the middle of the decimal expansion of n^2.at n=38A242964
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 195", based on the 5-celled von Neumann neighborhood.at n=35A270691
• Number x = concat(MSD(x),b) such that MSD(x)*b = d(x), where MSD(x) is the Most Significant Digit of x and d(x) is the number of divisors of x.at n=9A291618
• E.g.f.: Sum_{n>=0} x^n * exp(3*2^n*x) / n!.at n=5A340332