Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A045950
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A045950 Triangles in Star of David matchstick arrangement of side n. +0
1
0, 10, 59, 177, 394, 740, 1245, 1939, 2852, 4014, 5455, 7205, 9294, 11752, 14609, 17895, 21640, 25874, 30627, 35929, 41810, 48300, 55429, 63227, 71724, 80950, 90935, 101709, 113302, 125744, 139065, 153295, 168464, 184602, 201739, 219905 (list; graph; listen)
OFFSET

0,2

FORMULA

n(10n^2 + 9n + 1)/2.

CROSSREFS

Sequence in context: A044148 A044529 A129330 this_sequence A061001 A055586 A054489

Adjacent sequences: A045947 A045948 A045949 this_sequence A045951 A045952 A045953

KEYWORD

nonn

AUTHOR

R. K. Guy

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


AT&T Labs Research