40281

Appears in sequences

• Number of times the n-th prime appears among the decimal digits of 2^(2^n) + 1, the Fermat numbers.at n=26A078671
• a(n) = ((1+4*sqrt(2))*(1+2*sqrt(2))^n + (1-4*sqrt(2))*(1-2*sqrt(2))^n)/2.at n=7A164602
• A transform of the central binomial coefficients.at n=12A186335
• Floor-Sqrt transform of ordered Bell numbers (A000670).at n=11A192679
• Number of (w,x,y) with all terms in {0,...,n} and 2|w-x| >= max(w,x,y)-min(w,x,y).at n=38A213388
• T(n,k)=Number of length n+4 0..k arrays with some pair in every consecutive five terms totalling exactly k.at n=28A246892
• Number of length 1+4 0..n arrays with some pair in every consecutive five terms totalling exactly n.at n=7A246893
• Indices where the cumulative sum of cos(2k+1)^(2k+1) reaches a record high value.at n=31A389559