43746

Appears in sequences

• Expansion of (1/theta_4(q)^2 -1)/4 in powers of q.at n=16A002318
• The 5x + 1 sequence beginning at 7.at n=34A028389
• The sequence lambda(4,n), where lambda is defined in A055203. Number of ways of placing n identifiable positive intervals with a total of exactly four starting and/or finishing points.at n=6A059116
• Square array of lambda(k,n), where lambda is defined in A055203. Number of ways of placing n identifiable positive intervals with a total of exactly k starting and/or finishing points.at n=61A059117
• Numbers with no 1's in base 3, 4 & 10 expansions.at n=23A117564
• Triangle T(n,k) of number of loopless multigraphs with n labeled edges and k labeled vertices and without isolated vertices, n >= 1; 2 <= k <= 2*n.at n=27A122193
• The maximum possible value for the apex of a triangle of numbers whose base consists of a permutation of the numbers 1 to n, and each number in a higher row is the sum of the two numbers directly below it.at n=12A189162
• 5x + 1 sequence beginning at 11.at n=38A259193
• G.f. A(x) satisfies A(x) = (1 + x*A(x) / (1+x))^6.at n=5A371541