19748

Appears in sequences

• Numbers having four 4's in base 8.at n=30A043440
• Starting positions of strings of three 9's in the decimal expansion of Pi.at n=22A083642
• Expansion of (1+x^2)/(1-x-x^5) = (1+x^2)/((1-x+x^2)*(1-x^2-x^3)).at n=36A098523
• Number of base 32 n-digit numbers with adjacent digits differing by four or less.at n=4A126527
• The number of unlabeled graphs on n nodes with degree of 1 or 2.at n=31A186417
• Expansion of exp( Sum_{n>=1} A283535(n)/n*x^n ) in powers of x.at n=3A283580
• Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of Product_{j>=1} 1/(1-x^j)^(j^(k*j)) in powers of x.at n=24A283674
• Row n=3 of A283674.at n=3A283716
• Main diagonal of A283674.at n=3A283719
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of Product_{j>=1} 1/(1-j^(k*j)*x^j) in powers of x.at n=24A294758
• a(n) = n*(n + 5)*(n + 7)*(n + 10)/24 + 1.at n=21A323220
• Numbers that are the sum of eight fourth powers in eight or more ways.at n=35A345583
• Numbers that are the sum of eight fourth powers in nine or more ways.at n=14A345584
• Numbers that are the sum of eight fourth powers in exactly nine ways.at n=9A345841