38103

Appears in sequences

• a(1) = 2; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1.at n=45A025003
• a(1)=1; a(n) is the smallest positive integer that cannot be obtained from the integers {0, 1, ..., n-1} using each number at most once and the operators +, -, *, /.at n=9A060315
• a(n) is the smallest natural number we cannot obtain from n, n+1, n+2, n+3, n+4, n+5, n+6, n+7, n+8 and the operators +, -, *, /, using each number only once.at n=1A143193
• Number of 6-element subsets of {1, 2, ..., n} having pairwise coprime elements.at n=27A186982
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 149", based on the 5-celled von Neumann neighborhood.at n=37A270319
• Numbers k such that (59*10^k - 77)/9 is prime.at n=20A294631