0,3

When is next nonzero value, for n>11?

a(3) = 0 because for instance, first row = 3rd row = (1,2,2).

a(6) = 0 because for instance, 3rd column = 6th column = (2,2,2,2,2,2).

a(7) = 0 because for instance, first column = 4th column.

a(9) = 0 because for instance, 9th column = 2 * 4th column.

Cf. A000002.

Sequence in context: A104609 A087625 A013307 this_sequence A032531 A112455 A001608

Adjacent sequences: A119490 A119491 A119492 this_sequence A119494 A119495 A119496

easy,sign

Jonathan Vos Post (jvospost2(AT)yahoo.com), May 25 2006