A048713 3rd row of Family 1 "90 x 150 array": generations 0 .. n of Rule 90 starting from seed pattern 21.

21, 65, 325, 1105, 5397, 16705, 83013, 283985, 1376277, 4259905, 21299525, 72418385, 353703189, 1094795585, 5440291909, 18611524945, 90194313237, 279172874305, 1395864371525, 4745938863185, 23179938501909