1903757311domain: NAppears in sequencesE.g.f. sin(x) + cos(x) + tan(x).at n=15A029582Expansion of sin x + cos x + tan x + sec x.at n=15A029583Binomial transform of -1, -1, 1, 2, -5, -16, ... (signed variant of A000111).at n=15A218529