19686

Appears in sequences

• Numbers that are the sum of 6 nonzero 8th powers.at n=18A003384
• Numbers that are the sum of 4 positive 9th powers.at n=5A003393
• Numbers that are the sum of at most 4 positive 9th powers.at n=18A004888
• Numbers that are the sum of at most 5 positive 9th powers.at n=24A004889
• Numbers that are the sum of at most 6 positive 9th powers.at n=31A004890
• Sums of 2 distinct powers of 3.at n=37A038464
• Base-9 palindromes that start with 3.at n=20A043030
• Sums of two powers of 3.at n=46A055235
• Factorial splitting: write n! = x*y*z with x<y<z and x maximal and z is minimal; sequence gives value of z-x.at n=19A061033
• a(n) = 2*n*(2*n^2 + 1).at n=17A061804
• Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,7.at n=19A064240
• Partial sums of A001157: Sum_{j=1..n} sigma_2(j).at n=35A064602
• Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,63.at n=3A065699
• Sum of terms in each group in A074147.at n=33A074149
• a(n) = n^3 + 3.at n=27A084378
• Numbers k such that 3 and 5 do not divide binomial(2*k, k).at n=42A129508
• Expansion of -2*x^2*(-3-2*x+x^2-x^3-2*x^4+x^5) / ( (1+x)^2*(x-1)^4 ).at n=34A178465
• a(n) = 3^n + 3.at n=9A178674
• a(n) = n^9 + n.at n=3A196290
• Number of (w,x,y) with all terms in {0,...,n} and odd range.at n=33A212976