20468

Appears in sequences

• Representation degeneracies for boson strings.at n=43A005290
• Number of zero-entropy permutations of length n.at n=10A006948
• Number of 2 X 2 regular integer matrices with elements from {0,...,n} up to row and column permutation.at n=16A064363
• In base 4, n sets a new record for the number of Reverse and Add! steps needed to reach a palindrome starting with n.at n=13A075686
• Sixth column (m=5) of (1,6)-Pascal triangle A096956.at n=13A096959
• 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, 0, 0), (-1, 1, 1), (0, -1, 1), (1, 0, -1), (1, 0, 0)}.at n=9A148737
• G.f. satisfies: A(x) = 1 + x/A(-x*A(x)^4)^2.at n=8A213094
• Number of partitions p of n such that (number of numbers in p having multiplicity > 1) = number of 1s in p.at n=48A241090
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 515", based on the 5-celled von Neumann neighborhood.at n=27A272707
• 3*n analog to Keith numbers.at n=14A282758
• Number of permutations of [n] avoiding {1324, 2341, 4123}.at n=10A294703
• Start with a square of dimension 1 X 1, and repeatedly append along the squares of the previous step squares with half their side length that do not overlap with any prior square; a(n) gives the number of squares appended at n-th step.at n=11A321237