A062722 a(n) = ceiling(n/3)*round(n/4).

0, 0, 1, 1, 2, 2, 4, 6, 6, 6, 12, 12, 12, 15, 20, 20, 24, 24, 30, 35, 35, 35, 48, 48, 48, 54, 63, 63, 70, 70, 80, 88, 88, 88, 108, 108, 108, 117, 130, 130, 140, 140, 154, 165, 165, 165, 192, 192, 192, 204, 221, 221, 234, 234, 252, 266, 266, 266, 300, 300, 300, 315

Offset

0,5

Links

Table of n, a(n) for n=0..61.

Prog

(PARI) j=[]; for(n=0, 150, j=concat(j, ceil(n/3)*round(n/4))); j

Crossrefs

Sequence in context: A045999 A075569 A338276 * A160731 A323647 A302928

Adjacent sequences: A062719 A062720 A062721 * A062723 A062724 A062725

Keyword

nonn

Author

Jason Earls, Jul 14 2001

Status

approved