61250

Appears in sequences

• Triangle of coefficients in expansion of (5+7x)^n.at n=17A013626
• Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*5^j.at n=18A038271
• Non-deficient numbers with odd sigma such that the sum of the even divisors is twice the sum of the odd divisors.at n=32A171642
• a(n) = (9*n+2)*(9*n+7).at n=27A177072
• Irregular triangle in which row n has the values of k>1 such that sum_{i=n..n+k-1} i^2 is a square.at n=39A184885
• Triangle read by rows, n>=1, 1<=k<=n, T(n,k) = k*binomial(n,k)^3*(n^2+n-k*n-k+k^2)/((n-k+1)^2*n).at n=24A202409
• From higher-order arithmetic progressions.at n=2A259463
• Numbers n such that A083722(n) > 1 and A083722(n) occurs earlier in A083722.at n=30A293894
• Number of pairs (lambda,mu) of partitions lambda of n and mu of four with mu <= lambda (by diagram containment).at n=30A303854
• Numbers that are the sum of fourth powers of three distinct positive integers in arithmetic progression.at n=41A306214
• a(n) = A276086(A328622(n)).at n=43A346102
• Numbers whose k-th arithmetic derivative is zero for some k>0, ordered by their position in A276086.at n=38A351255
• a(n) is the conjectured largest number such that both a(n) and a(n) - n are 7-smooth numbers. a(n) can be less than n. Otherwise, if no such number exists then a(n) = 0.at n=13A376924
• 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=48A391933