-299

Appears in sequences

• Expansion of Product_{m>=1} (1+q^m)^(-13).at n=3A022608
• a(n) = floor(Sum_{k=0..n} tan(k)).at n=47A051508
• a(n) = floor(Sum_{k=0..n} tan(k)).at n=46A051508
• a(n) = floor(Sum_{k=0..n} tan(k)).at n=44A051508
• a(n) = floor(Sum_{k=0..n} tan(k)).at n=43A051508
• a(n) = floor(Sum_{k=0..n} tan(k)).at n=39A051508
• a(n) = round(Sum_{k=0..n} tan(k)).at n=41A051509
• a(n) = round(Sum_{k=0..n} tan(k)).at n=40A051509
• a(n) = round(Sum_{k=0..n} tan(k)).at n=46A051509
• a(n) = round(Sum_{k=0..n} tan(k)).at n=47A051509
• a(n) = ceiling(Sum_{k=0..n} tan(k)).at n=40A051510
• a(n) = ceiling(Sum_{k=0..n} tan(k)).at n=41A051510
• Start with 1, add the next number if one gets a prime then add the next number else subtract the next...at n=28A074170
• a(n) = (n+1)*(2-n)/2.at n=25A080956
• Alternating row sums of array A078740 ((3,2)-Stirling2).at n=3A090437
• Alternating row sums of array A090440 (generalized Stirling2 array (4,3)).at n=2A091028
• Matrix inverse, read by rows, of triangle A104029, which forms the pairwise sums of trinomial coefficients.at n=11A104030
• Column 1 of triangle A104030, which is the matrix inverse of the triangle of pairwise sums of trinomial coefficients.at n=3A104031
• a(0)=1, a(1)=2 continued recursively a(n) = (n-1)*a(n-1) - a(n-2) if n is even and a(n) = a(n-1) - (n-2)*a(n-2) if n is odd.at n=12A122578
• a(n) = -n^2 + 9*n + 23.at n=23A126719