20196

Appears in sequences

• a(n) = 1^n + 2^n + 3^n.at n=9A001550
• Numbers that are the sum of 6 nonzero 8th powers.at n=20A003384
• Numbers that are the sum of 3 positive 9th powers.at n=5A003392
• Numbers that are the sum of at most 3 positive 9th powers.at n=14A004887
• Numbers that are the sum of at most 4 positive 9th powers.at n=20A004888
• Numbers that are the sum of at most 5 positive 9th powers.at n=27A004889
• Numbers that are the sum of at most 6 positive 9th powers.at n=35A004890
• 5-dimensional pyramidal numbers: a(n) = n*(n+1)*(n+2)*(n+3)*(2n+3)/5!.at n=14A005585
• Sum of 9th powers.at n=3A007487
• Expansion of Product_{k>=1} (1 - x^k)^18.at n=11A010824
• Expansion of Product_{k>=1} (1 - x^k)^(-k^9).at n=3A023878
• dot_product(n,n-1,...2,1)*(7,8,...,n,1,2,3,4,5,6).at n=37A026066
• a(n) = Product_{k|n} (n+1-k).at n=33A056819
• GCD of n! and the reverse of n!.at n=30A071678
• a(n) = n*(n - 1)*(n + 2)/2.at n=33A077414
• An interleaved sequence of pyramidal and polygonal numbers.at n=30A081284
• a(n) = (n+1)*(n+2)^2*(n+3)*(n+4)*(n+5)*(2*n+3)/720.at n=7A108681
• a(n) = a(n-1) + Sum_{k=0..n/3} a(n-3k) with a(0)=1.at n=24A113435
• First row of A113435.at n=8A113436
• Numbers k such that k + sigma(k) + phi(k) is a square.at n=30A116009