22074

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DOH = Dodecasil 1H [Si34O68].qR starting with a T3 atom.at n=13A019116
• Number of fixed poly-[3.6.3.6]-tiles (holes allowed) with n cells (division into rhombi is significant).at n=9A197461
• Number of (n+2) X 7 0..2 matrices with each 3 X 3 subblock idempotent.at n=13A224603
• Lesser of 2 successive tetraprimes (k, k+4) sandwiching three consecutive not squarefree numbers.at n=5A367791
• a(n) is the number of 5 element sets of distinct integer sided strict rectangles that fill an n X n square.at n=16A387605