19222

Appears in sequences

• a(0) = 1, a(n) = 20*n^2 + 2 for n>0.at n=31A010010
• Numbers k such that numerator(Bernoulli(2*k)/(2*k)) is different from numerator(Bernoulli(2*k)/(2*k*(2*k-1))).at n=74A090495
• 30*a(n) is the gap between sexy prime triples in the n-th sexy prime triple triple whose initial term is 17.at n=14A090891
• Triangle read by rows: T(n,k) is the number of k-matchings in the C_n X P_3 graph (C_n is the cycle graph on n vertices and P_3 is the path graph on 3 vertices).at n=38A102089
• a(n) = 686*n + 14.at n=27A157366
• Sum of lengths of longest unbordered subword, over all binary words of length n.at n=10A295499
• G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4*A(x)^2.at n=26A307971
• A digitized pure tuning tone, sampled at standard settings for consumer audio: a(n) = floor(sin(2*Pi*(440/44100)*n)*32767).at n=10A320277
• Row sums of A321625.at n=9A321626
• Number of minimum total dominating sets in the n-Goldberg graph.at n=18A382657