34146

Appears in sequences

• Number of chessboard polyominoes with n squares.at n=10A001933
• Indices of primes in sequence defined by A(0) = 31, A(n) = 10*A(n-1) + 81 for n > 0.at n=11A101848
• Number of right triangles on a (n+1)X6 grid.at n=27A189810
• O.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n*A(n*x)^(5*n)/n! * exp(-n*x*A(n*x)^5).at n=5A218676
• Numbers m such that the GCD of the x's that satisfy sigma(x) = m is 4.at n=36A241649
• Triangular array: For n >= 2 and 0 <= k <= n - 2, T(n, k) equals the number of rooted duplication trees on n gene segments whose leftmost visible duplication event is (k, r), for 1 <= r <= (n - k)/2.at n=50A264869
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 803", based on the 5-celled von Neumann neighborhood.at n=29A273578
• Number of multiples of n which have only distinct and nonzero digits in base 10.at n=29A328287
• Lexicographically earliest sequence of distinct terms > 0 such that the sum a(n) + a(n+1) is a substring of the concatenation (a(n), a(n+1)).at n=18A359482