73125

Appears in sequences

• 4-dimensional figurate numbers: a(n) = n*binomial(n+2, 3).at n=24A002417
• Numbers that are the sum of 2 nonzero squares in exactly 5 ways.at n=29A025288
• Numbers that are the sum of 2 distinct nonzero squares in exactly 5 ways.at n=23A025306
• a(n) = 225*(n-1)*(n-2)/2.at n=24A027470
• Bisection of A002417.at n=12A100430
• Third column (k=2) of triangle A134832 (circular succession numbers).at n=8A134515
• Triangle of succession numbers for circular permutations.at n=57A134832
• Expansion of (E_4(q) - E_4(q^5)) / 240 in powers of q where E_4 is an Eisenstein series.at n=39A226333
• 30-gonal pyramidal numbers: a(n) = n*(n+1)*(28*n-25)/6.at n=25A256650
• Numbers such that the product of their digits is equal to 10 times the sum of their prime factors, without multiplicity.at n=25A306313
• G.f. A(x) satisfies: A(x) = A(x^2) + x * (1 + 4*x + x^2) / (1 - x)^4.at n=39A328408
• Number of n-chains of divisors of n.at n=23A343939