32711

Appears in sequences

• Expansion of 1/((1-x)(1-3x)(1-7x)(1-9x)).at n=4A021594
• Numbers having four 7's in base 8.at n=21A043452
• a(1) = 9, then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. (Reverse concatenation is taken term-wise and not digit-wise).at n=30A083995
• Numbers whose set of base 8 digits is {0,7}.at n=29A097254
• Number of distinct values taken by 10th derivative of x^x^...^x (with n x's and parentheses inserted in all possible ways) at x=1.at n=13A216403
• Floor(Primorial(n) / compositorial(n)), that is, floor(A002110(n) / A036691(n)).at n=13A233437
• Number of n-node rooted trees with a forbidden limb of length 7.at n=13A255637
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 374", based on the 5-celled von Neumann neighborhood.at n=42A271459
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 974", based on the 5-celled von Neumann neighborhood.at n=14A284543
• Number of rooted trees with n nodes such that no more than six subtrees of the same size extend from the same node.at n=14A318800
• Number of rooted trees with n nodes such that no more than six isomorphic subtrees extend from the same node.at n=14A318853
• a(n) is the number of 4 element sets of distinct integer sided strict rectangles that fill an n X n square.at n=40A384724
• a(n) = Sum_{k=0..n} 2^k * binomial(n+3,k+3) * binomial(2*k+6,k+6).at n=4A387308