A138726 Atomic numbers of the periodic table of the elements, read downwards along 72 columns, up to the 11th period.

1, 3, 11, 19, 37, 55, 87, 119, 169, 219, 291, 4, 12, 20, 38, 56, 88, 120, 170, 220, 292, 21, 39, 57, 89, 121, 171, 221, 293, 58, 90, 122, 172, 222, 294, 123, 173, 223, 295, 224, 296, 225, 297, 226, 298, 227, 299, 228, 300, 229, 301, 230, 302, 231, 303, 232, 304, 233

Offset

1,2

Comments

This finite sequence has 362 members. Atomic numbers > 362 are not members.

Links

Table of n, a(n) for n=1..58.

Example

========================================================================
............................ STRUCTURE OF .............................
................. THE PERIODIC TABLE OF THE ELEMENTS ..................
............................ (72 columns) .............................
========================================================================
X......................................................................X
XX................................................................XXXXXX
XX................................................................XXXXXX
XXX......................................................XXXXXXXXXXXXXXX
XXX......................................................XXXXXXXXXXXXXXX
XXXX........................................XXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXX........................................XXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXX......................XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXX......................XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
========================================================================

Crossrefs

Cf. A099955, A134984, A138723, A138724, A138725.

Sequence in context: A138724 A134984 A138725 * A219527 A161429 A079544

Adjacent sequences: A138723 A138724 A138725 * A138727 A138728 A138729

Keyword

fini,nonn

Author

Omar E. Pol, Apr 09 2008

Status

approved