19797

Appears in sequences

• Positions of remoteness 3 in Beans-Don't-Talk.at n=45A005695
• Numbers whose base-2 representation has exactly 13 runs.at n=25A043580
• Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 24.at n=53A051965
• Numbers n for which one step of the Collatz iteration (3n+1)/2^r gives rise to values 59,53,47,41,35,29,23,17,11 and 5 for r=1,3,5,..,19.at n=5A072253
• Number of (n+1) X 2 0..2 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing rightwards and downwards.at n=3A206505
• Number of (n+1)X5 0..2 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.at n=0A206508
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.at n=6A206512
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards.at n=9A206512
• Numbers k such that 5*10^k + 87 is prime.at n=29A271360
• Let t be the closest triangular number to n! (in case n=2, the only case where we have a tie, take the larger t); then a(n) = n! - t.at n=13A338489