145080

Appears in sequences

• Symmetrical Hahn weights on q-form factorials:m=2;q=3; q-form:t(n,m)=If[m == 0, n!, Product[Sum[(m + 1)^i, {i, 0, k - 1}], {k, 1, n}]]; Hahn weight:b(n,k,m)=If[n == 0, 1, (n!*t[m + 1, k]*t[m + 1, n - k])/(k!*(n - k)!*t[1, n])].at n=23A157321
• Symmetrical Hahn weights on q-form factorials:m=2;q=3; q-form:t(n,m)=If[m == 0, n!, Product[Sum[(m + 1)^i, {i, 0, k - 1}], {k, 1, n}]]; Hahn weight:b(n,k,m)=If[n == 0, 1, (n!*t[m + 1, k]*t[m + 1, n - k])/(k!*(n - k)!*t[1, n])].at n=25A157321
• Denominator of Sum_{k=1..n} 1/sigma(k).at n=15A212718
• Denominator of Sum_{k=1..n} 1/sigma(k).at n=16A212718
• Denominator of Sum_{k=1..n} 1/sigma(k).at n=17A212718
• Denominator of Sum_{k=1..n} 1/sigma(k).at n=18A212718
• Number of permutations of order n with the length of longest run equal 9.at n=4A230132