1,3

Each row contains a series of consecutive numbers. There is a diagonal pattern of zeros in the left part of the table.

1 = 1

0+2 = 2

1+2+0 = 3

1+0+3+0 = 4

0+2+3+0+0 = 5

1+2+3+0+0+0 = 6

1+2+0+4+0+0+0 = 7

1+0+3+4+0+0+0+0 = 8

0+2+3+4+0+0+0+0+0 = 9

Cf. A000027.

Sequence in context: A125925 A036578 A077402 this_sequence A094114 A104607 A120728

Adjacent sequences: A137850 A137851 A137852 this_sequence A137854 A137855 A137856

nonn,tabl

Mats Granvik (mgranvik(AT)abo.fi), Feb 14 2008