22361

Appears in sequences

• a(n) is root of square starting with digit 5: first term of runs.at n=6A035072
• Triangle read by rows: Each row is constructed by forming the partial sums of the previous row, reading from the right and at every third row repeating the final term.at n=43A099961
• Triangle read by rows: Each row is constructed by forming the partial sums of the previous row, reading from the right and at every third row repeating the final term.at n=44A099961
• First column (also row sums) of triangle in A099961.at n=14A099962
• Semiprimes in A056109.at n=40A113528
• a(1) = 3, a(2) = 4. a(n) = (largest composite which occurs earlier in sequence) + (largest prime which occurs earlier in sequence).at n=33A120365
• Number of Dyck paths such that the area between the x-axis and the path is n.at n=27A143951
• Number of 5-bead necklaces labeled with numbers -n..n allowing reversal, with sum zero and first differences in -n..n.at n=17A209033
• Number of total dominating sets in the n-triangular honeycomb bishop graph.at n=4A304553