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A244367
Main diagonal of A244580.
5
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
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
PROG
(PARI) See Links section.
KEYWORD
nonn
AUTHOR
Omar E. Pol, Jul 05 2014
STATUS
approved