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A026407
a(n) = greatest k such that s(j) > 0 for all j < k at end of stage n in forming A026409.
0
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
1,2
CROSSREFS
Cf. A026409.
Sequence in context: A198033 A375598 A071260 * A003035 A094453 A191200
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Sep 26 2019
STATUS
approved