21946647domain: NAppears in sequencesNumber of (n+1)X2 0..3 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=16A184087Expansion of e.g.f. exp(x + Sum_{k>=2} prime(k-1)*x^k/k!).at n=11A300632