a(n) = n! * [x^n] exp(n*x)*(sec(x) + tan(x)).
A292976
a(n) = n! * [x^n] exp(n*x)*(sec(x) + tan(x)).
Terms
- a(0) =1a(1) =2a(2) =9a(3) =65a(4) =645a(5) =8141a(6) =124729a(7) =2247853a(8) =46584937a(9) =1091386465a(10) =28521016621a(11) =822514469149
External references
- oeis: A292976