115797domain: NAppears in sequencesCoefficients of a new recursive polynomial: a = 11; b = 19; c = -8; r(x,n)=(a*x + b)*r(x, n - 1) + c*r(x, n - 2).at n=19A146751Number of alternating strict compositions of n. Number of alternating (up/down or down/up) permutations of strict integer partitions of n.at n=41A349054