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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A074136 Main diagonal of triangle A074135. 1
1, 4, 7, 13, 18, 21, 28, 40, 49, 64, 75, 81, 94, 115, 130, 138, 155, 182, 201, 211, 232, 265, 288, 300, 325, 364, 391, 433, 462, 477, 508, 556, 589, 606, 641, 695, 732, 751, 790, 850, 891, 912, 955, 1021, 1066, 1089, 1136, 1208, 1257, 1282, 1333, 1411, 1464 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..53.

CROSSREFS

Cf. A074135.

Sequence in context: A110267 A049698 A288823 * A266811 A085787 A111710

Adjacent sequences:  A074133 A074134 A074135 * A074137 A074138 A074139

KEYWORD

nonn,easy,less

AUTHOR

Amarnath Murthy, Aug 27 2002

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy .

Last modified February 25 20:58 EST 2018. Contains 299656 sequences. (Running on oeis4.)