51750

Appears in sequences

• a(n) = (7*n+1)*(7*n+6).at n=32A001526
• Number of distinct minimal unary DFA's with exactly n states.at n=12A059412
• The Wiener index of the Kneser graph K(n,2) (n>=5).at n=20A228306
• Triangular array read by rows: row n shows the coefficients of the polynomial u(n) = c(0) + c(1)*x + ... + c(n)*x^(n) which is the numerator of the n-th convergent of the continued fraction [k, k, k, ... ], where k = (x + 2)/(x + 1).at n=48A231732
• Number of ways to place 2 points on a triangular grid of side n so that they are not adjacent.at n=23A239568
• Number of 3Xn arrays containing n copies of 0..3-1 with no element 1 greater than its north, southwest or southeast neighbor modulo 3 and the upper left element equal to 0.at n=11A266922
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 406", based on the 5-celled von Neumann neighborhood.at n=15A281892
• a(n) = n * A276086(n).at n=23A324580
• Least common multiple of n and A276086(n).at n=23A328584
• Array read by antidiagonals: T(n,k) is the number of permutations of k indistinguishable copies of 1..n with exactly 2 local maxima.at n=12A334773
• Starts of runs of 3 consecutive Pell-Niven numbers (A352320).at n=27A352322