103708

Appears in sequences

• a(n) = L(n+2) + c(n) where L(k) is the k-th Lucas number and c(n) is the n-th number that is 1 or 3 or is not a Lucas number.at n=21A022810
• Least multiple of n such that every partial concatenation followed by a 3 is prime.at n=43A111437
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n+1), where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, b(2) = 5, b(3) = 6, and (a(n)) and (b(n)) are increasing complementary sequences.at n=20A296843
• a(n) = n + 2*cos((n*Pi)/3) + Lucas(n).at n=23A297661
• Number of chordless cycles in the n-web graph.at n=21A297665
• Number of no-leaf subgraphs of the 2 X n grid up to horizontal and vertical reflection.at n=11A303930