30779

Appears in sequences

• The number of n-almost primes less than or equal to 6^n, starting with a(0)=1.at n=8A116427
• First occurrence of n in A085068.at n=25A129377
• Numbers k such that 7*R_(k+2) - 6*10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=23A257027
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 137", based on the 5-celled von Neumann neighborhood.at n=37A270276
• Triangle read by rows: T(n,m) (n >= m >= 1) = number of vertices formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares.at n=52A331453
• The number of overpartitions of n where the number of non-overlined parts is at least two more than the number of overlined parts.at n=26A340668