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A244367 Main diagonal of A244580. 4
1, 2, 4, 6, 6, 8, 9, 12, 12, 15, 15, 16, 18, 20, 20, 24, 24, 25, 28, 28, 30, 30, 32, 35, 35, 36, 40, 40, 42, 42, 45, 45, 48, 48, 49, 50, 54, 54, 56, 56, 60, 60, 63, 63, 64, 66, 66, 70, 70, 72, 72, 72, 77, 77, 80, 80, 81, 84, 84, 88, 88, 90, 90, 91, 91 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) is the number associated to the n-th cell of the main diagonal in the diagram of the symmetry of sigma. For more information see A237593 and A237270.

Records give A071562.

First differences are A259179. - Omar E. Pol, Apr 21 2020

LINKS

Table of n, a(n) for n=1..65.

CROSSREFS

Cf. A000203, A071562, A196020, A236104, A237270, A237271, A237593, A240542, A259179.

Sequence in context: A235384 A342597 A035280 * A020887 A050827 A082990

Adjacent sequences:  A244364 A244365 A244366 * A244368 A244369 A244370

KEYWORD

nonn

AUTHOR

Omar E. Pol, Jul 05 2014

STATUS

approved

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Last modified November 29 18:11 EST 2021. Contains 349416 sequences. (Running on oeis4.)