login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A067404 Fourth column of triangle A067402. 4
1, 7, 112, 1792, 28672, 458752, 7340032, 117440512, 1879048192, 30064771072, 481036337152, 7696581394432, 123145302310912, 1970324836974592, 31525197391593472, 504403158265495552 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n)= A067402(n+3, 3). a(n)= 7*16^(n-1), n>=1, a(0)=1.

G.f.: (1-9*x)/(1-16*x).

CROSSREFS

Cf. A067403 (third column), A067405 (fifth column), A001025 (powers of 16).

Sequence in context: A117795 A163700 A094219 * A129030 A128576 A147631

Adjacent sequences:  A067401 A067402 A067403 * A067405 A067406 A067407

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Jan 25 2002

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 14 06:36 EST 2012. Contains 205570 sequences.