420175

Appears in sequences

• Numbers of the form 5^i*7^j with i, j >= 0.at n=34A003595
• Numbers whose prime factors are 5 and 7.at n=19A033851
• Triangle of numbers related to rooted trees and unrooted planar trees.at n=25A056856
• The terms of A055258 (sums of two powers of 7) divided by 2.at n=33A073218
• a(n) = n^2*7^n.at n=5A128786
• a(n) = n^5*(n^2 + 1)/2.at n=7A168364
• Triangular array T; for n>0, row n shows the coefficients of a reduced polynomial having zeros -k/(n+1) for k=1,2,...,n.at n=25A203904
• T(n,k)=Number of n X n 0..k arrays with corresponding row and column sums equal.at n=30A229870
• Triangle read by rows: coefficients T(n,k) of a binomial decomposition of 2^n-1 as Sum(k=0..n)T(n,k)*binomial(n,k).at n=42A244126
• Partition array in Abramowitz-Stegun order for the number of ways of putting n stones into a rectangular m X n grid of squares such that each of the m rows contains at least one stone.at n=40A258152
• Twisted variant of A276086 indexed by A328626.at n=42A328627
• Numbers having a self-conjugate multiplicative partition into primes.at n=18A378633
• Irregular triangle T(n, k) = Product_{i=1..n} prime(i)^(k mod prime(i)), with n >= 0, and 0 <= k < A002110(n), read by rows.at n=51A391933