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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..62.

CROSSREFS

Sequence in context: A189030 A198033 A071260 * A003035 A094453 A191200

Adjacent sequences:  A026404 A026405 A026406 * A026408 A026409 A026410

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Sep 26 2019

STATUS

approved

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Last modified August 10 14:50 EDT 2020. Contains 336381 sequences. (Running on oeis4.)