55744

Appears in sequences

• Generalized tangent numbers d(5,n).at n=2A000320
• Generalized tangent numbers d_(n,3).at n=4A000488
• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DDR = Deca-dodecasil 3R[Si120O240]qR starting with a T3 atom.at n=14A019111
• Numbers k such that 5*2^k - 7 is prime.at n=26A059749
• Shanks's array d_{a,n} (a >= 1, n >= 1) that generalizes the tangent numbers, read by antidiagonals upwards.at n=23A235606
• Solution of the complementary equation a(n) = 2*a(n-2) - b(n-1) + n, where a(0) = 4, a(1) = 5, b(0) = 1, and (a(n)) and (b(n)) are increasing complementary sequences.at n=29A295068
• Number of pairs (lambda,mu) of partitions lambda of n and mu of eight with mu <= lambda (by diagram containment).at n=19A303858
• Generalized Euler numbers, a(n) = n!*[x^n](sec(5*x)*(sin(x) + sin(3*x) + cos(2*x) + cos(4*x))).at n=5A349265
• Array A(n, k) that generalizes Euler numbers, class numbers, and tangent numbers, read by ascending antidiagonals.at n=50A349271
• Starts of runs of 3 consecutive tribonacci-Niven numbers (A352089).at n=24A352091