107163

Appears in sequences

• Numbers of the form 3^i*7^j with i, j >= 0.at n=39A003594
• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite BOG = Boggsite Na4Ca7[Al18Si78O192].74H2O starting with a T1 atom.at n=15A019083
• Numbers whose prime factors are 3 and 7.at n=23A033850
• Odd numbers divisible by exactly 9 primes (counted with multiplicity).at n=8A046322
• a(n) = n^2*3^n.at n=7A127960
• G.F.: exp( Sum_{n>=1} A014578(n)*(3x)^n/n ), where A014578 is the binary expansion of Thue constant.at n=11A174470
• Numbers with prime signature {7,2}, i.e., of form p^7*q^2 with p and q distinct primes.at n=10A179689
• Number of partitions of n in which two summands (of each size) are designated.at n=31A255180
• Odd numbers of the form (m*k)^2/(m^2-k^2) for distinct integers m and k.at n=43A259288
• Triangle (sans apex) of coefficients of terms of the form (eM_1)^j*(eM_2)^k re construction of triangle A287768.at n=41A288842
• Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.at n=4A298233
• Number of nX5 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.at n=4A298237
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.at n=40A298240