109248

Appears in sequences

• Triangle T(n,k), 0<=k<=n, read by rows, given by [1, 2, 2, 4, 3, 6, 4, 8, 5, 10, 6, 12, . . . ] DELTA [2, 1, 4, 2, 6, 3, 8, 4, 10, 5, 12, 6, . . . ] where DELTA is the operator defined in A084938.at n=23A108694
• Initial members of abundant quintuplets, i.e., values of k such that (k, k+2, k+4, k+6, k+8) are all abundant numbers.at n=21A108926
• Total number of domino tilings of Ferrers-Young diagrams summed over all partitions of 2n.at n=13A304662
• Total number of tilings of Ferrers-Young diagrams using dominoes and at most one monomino summed over all partitions of n.at n=26A304680