83964

Appears in sequences

• Number of permutations of length n which avoid the patterns 1243, 2341, 4321.at n=21A116825
• a(n) = floor(6^n/(2+2*cos(Pi/9))^n).at n=26A240733
• Integers n not of form 3m+2 such that for any integer k > 0, n*10^k+1 has a divisor in the set { 7, 11, 13, 37 }.at n=19A243969
• Number of rooted trees with n nodes such that six equals the maximal number of isomorphic subtrees extending from the same node.at n=13A318863