24611

Properties

Appears in sequences

• Expansion of e.g.f. sin(x)/cos(2*x).at n=3A000464
• Generalized tangent numbers d_(n,4).at n=1A000518
• Expansion of (sin^2 x + sin x) /cos 2x.at n=7A000822
• Generalized Euler numbers, or Springer numbers.at n=7A001586
• Primes that are palindromic in base 5.at n=32A029973
• Numbers k such that 38^k - 37^k is prime.at n=5A062604
• Number of isomeric aza-benzenoids with five nitrogen atoms.at n=4A121972
• a(n) = 15*n*(n+1) + 11.at n=40A132208
• Table of coefficients of a polynomial sequence related to the Springer numbers.at n=28A185417
• Square array, read by antidiagonals, used to recursively calculate the Springer numbers A001586.at n=28A185418
• Square array, read by antidiagonals, used to recursively calculate the Springer numbers A001586.at n=29A185418
• Fajtlowicz p-primes.at n=33A185955
• The right-hand half-triangle of A185356 (or A202690).at n=28A202815
• The left-hand half-triangle of A185356 (or A202690).at n=28A202816
• Expansion of e.g.f.: exp(-x) / cosh(2*x).at n=7A212435
• Triangle read by rows, coefficients of polynomials related to the Springer numbers A001586.at n=28A214554
• Primes p of the form p = A161671(k) = A161671(k+1).at n=25A220220
• Shanks's array d_{a,n} (a >= 1, n >= 1) that generalizes the tangent numbers, read by antidiagonals upwards.at n=13A235606
• Triangle of Arnold L(b) for Springer numbers.at n=28A256665
• Triangle of Arnold L(b) for Springer numbers.at n=29A256665