159972

Appears in sequences

• The r-th term of the n-th row of the following triangle is C[{T(n)-T(r-1)},r] where T(n) is the n-th triangular number. 1 3 1 6 10 1 10 36 35 1 ... Sequence contains the row sums.at n=7A110771
• The number of squarefree numbers whose largest prime divisor is prime(n) and that are averages of twin prime pairs.at n=26A354950