3110400000domain: NAppears in sequencesMultiply successively by 1 (once), 2 (twice), 3 (thrice), etc.at n=17A010552Let k(n) = mod(3,n)-1. Then a(n) = 4*a(n-1) if n is odd, otherwise ((5+k(n))/4)*a(n-1), with a(0) = 1, a(1) = 2.at n=28A123761Numbers k in A376936 that set records in A379552.at n=27A379553