80601

Appears in sequences

• a(n) = 3^n * Sum_{i=1..n} i^3/3^i.at n=8A066999
• Triangular numbers all of whose digits are nonprimes.at n=34A111484
• Hexagonal numbers for which both the sum of the digits and the product of the digits are also hexagonal numbers.at n=19A117064
• Triangular numbers t which are average of two consecutive primes p and p+4.at n=33A129752
• a(n) = m*(m+1)/2, where m = floor(n^(5/2)).at n=10A185542
• Expansion of Product_{k>=1} 1/((1 - x^k) * (1 - x^(2*k)) * (1 - x^(3*k)) * (1 - x^(4*k))).at n=27A327043
• Hexagonal numbers that are sphenic numbers.at n=39A380007