19700

Appears in sequences

• Expansion of Product_{m>=1} (1+x^m)^10.at n=7A022575
• a(n) = d(n)/2, where d = A026040.at n=46A026041
• (Largest) diagonal of the Zorach additive triangle A035312.at n=11A035313
• McKay-Thompson series of class 28A for Monster.at n=34A058606
• a(n) = n^3 + 17.at n=27A084379
• Overlay of Pell companion numbers: a(n) = A001333(n) + A001333(n-6).at n=12A131721
• Number of different strings of length n+4 obtained from "123...n" by iteratively duplicating any substring.at n=21A137741
• Number of assembly graphs with n rigid vertices and no crossings.at n=5A199140
• Number of nX5 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=5A281341
• Number of nX6 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=4A281342
• T(n,k)=Number of nXk 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=49A281344
• T(n,k)=Number of nXk 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=50A281344
• Practical numbers z such that z^2 = x^2 + y^2 for some practical numbers x and y with gcd(x,y,z) = 4.at n=33A294112
• Trajectory of 397 under the map A340008: n -> n/2 if n is even, n-> n^2 - 1 if n is an odd prime, otherwise n -> n - 1.at n=5A340419
• Numbers that are the sum of five fourth powers in three or more ways.at n=27A344243
• Numbers that are the sum of five fourth powers in exactly three ways.at n=27A344244
• Sum of numerator and denominator in a rational approximation j/k of q = log(2)/log(3), such that q - j/k is a new minimum, i.e., q is approximated from below.at n=22A355514