191488

Appears in sequences

• 4-dimensional figurate numbers: a(n) = n*binomial(n+2, 3).at n=31A002417
• Number of non-unitary divisors of n!.at n=22A048657
• Bisection of A002417.at n=15A100431
• Number of n X 5 binary arrays without the pattern 0 1 diagonally or vertically.at n=22A188839
• Irregular triangle T(n,k) read by rows in which n-th row lists in colex order all series-reduced tree degree sequences D of n nodes encoded as t = Product_{d in D} prime(d); n >= 4, 1 <= k <= A002865(n-2).at n=32A345970
• Numbers whose prime factors and prime signature have the same mean.at n=16A359904