100260

Appears in sequences

• Number T(n,k) of permutations of [n] with exactly k (possibly overlapping, cyclic wrap-around) occurrences of the consecutive step pattern UDU (U=up, D=down); triangle T(n,k), n>=0, 0<=k<=floor(n/2), read by rows.at n=26A232933
• Number of compositions of n into distinct parts where each part i is marked with a word of length i over a quaternary alphabet whose letters appear in alphabetical order.at n=9A261842
• Numbers m that are not practical and have an abundancy index sigma(m)/m which is larger than that of any smaller number that is not practical.at n=13A335030