A026407 a(n) = greatest k such that s(j) > 0 for all j < k at end of stage n in forming A026409.

1, 2, 4, 6, 7, 10, 12, 15, 19, 23, 28, 31, 36, 37, 45, 49, 58, 60, 67, 75, 77, 90, 91, 104, 110, 111, 125, 135, 145, 158, 160, 163, 186, 202, 203, 218, 219, 236, 254, 256, 274, 283, 303, 322, 325, 353, 358, 359, 390, 405, 407, 448, 450, 477, 492, 494, 498, 543, 544, 547, 587, 589

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Crossrefs

Cf. A026409.

Extensions

More terms from Sean A. Irvine, Sep 26 2019