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A262464 Indices of rows of triangle A262432 where the maximum term of the row is a new record. 1
1, 6, 15, 30, 60, 90, 140, 264, 308, 440, 528, 760, 870, 1305, 1740, 2436, 2610, 3480, 4060, 5220, 6786, 6960, 7830, 12180, 13806, 14160, 15930, 19488, 24030, 28320, 29264, 34515, 35400, 39648, 50976, 55224, 63720, 66080, 69030, 74340, 87792, 96642, 115104, 122080, 127530, 143880 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Michel Marcus, Table of n, a(n) for n = 1..127

EXAMPLE

After row 1 which is [1], the next maximum 2 occurs at row 6 which is [2, 1, 1, 1, 1, 0].

PROG

(PARI) lista(nn) = {m = 0; vc = vector(nn); for (n=1, nn, d = denominator(sigma(n, -1)); vc[d]++; if (vc[d] > m, print1(n, ", "); m = vc[d]); ); }

CROSSREFS

Cf. A262432.

Sequence in context: A331073 A011886 A212251 * A232169 A231814 A056497

Adjacent sequences:  A262461 A262462 A262463 * A262465 A262466 A262467

KEYWORD

nonn

AUTHOR

Michel Marcus, Sep 23 2015

STATUS

approved

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Last modified April 9 06:59 EDT 2020. Contains 333344 sequences. (Running on oeis4.)