38001

Appears in sequences

• a(n) = floor(n*(n-1)*(n-2)*(n-3)/15).at n=29A011925
• McKay-Thompson series of class 15C for Monster.at n=19A058510
• Integers arising in A133677.at n=27A133645
• 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), (0, 1, -1), (1, 0, 1), (1, 1, -1)}.at n=10A148721
• McKay-Thompson series of class 15C for the Monster group with a(0) = 3.at n=19A153084
• One-half of averages of twin prime pairs of A001318.at n=21A154565
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x) defined below in Comments.at n=18A192754
• Least number k not divisible by 10 such that the decimal expansion of k^n contains some digit exactly n times.at n=40A243151
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 107", based on the 5-celled von Neumann neighborhood.at n=37A270166
• Least number x such that x^n has n digits equal to k. Case k = 1.at n=40A285448
• Array read by falling antidiagonals: T(n,k) = numerator(Sum_{x>0} (x^n)/(k^x)); n >= 0 and k >= 2.at n=43A374895