34224

Appears in sequences

• Numbers k such that 15*2^k + 1 is prime.at n=35A002258
• Every prefix prime in base 9 (written in base 9).at n=45A024769
• Number of cubefree self avoiding walks in 2 dimensions of length n.at n=11A038592
• McKay-Thompson series of class 29A for Monster.at n=39A058611
• Let r, s, t, u be four permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)*s(i)*t(i)*u(i).at n=15A070736
• Number of binary trees of path length n.at n=35A095830
• Number of perfect rulers with n segments (n>=0).at n=19A103301
• Negative value of coefficient of x^(n-2) in the characteristic polynomial of a certain n X n integer circulant matrix.at n=22A127407
• Number of meaningful differential operations of the k-th order on the space R^12.at n=13A129639
• McKay-Thompson series of class 29A for the Monster group with a(0) = 2.at n=39A136570
• Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1s.at n=5A296331
• Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1s.at n=3A296333
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1s.at n=39A296335
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0 or 2 neighboring 1s.at n=41A296335
• Numbers that can be written as the sum of four or more consecutive squares in more than one way.at n=29A307937
• Number of subsets of {1..n} containing all of their integer products <= n.at n=17A326076
• Number of tieless rugby (union) games with n scoring events.at n=6A334288
• a(n) = (1/phi(n)) * Sum_{j=1..n} Sum_{k=1..n} phi(n*j*k).at n=22A372668