Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

0,4

Table of n, a(n) for n=0..70.

Floretion Algebra Multiplication Program, FAMP Code: 4kbaseisumseq[.25'i + .25i' + .5'ij' + .5'ji' + .25'jk' + .25'kj']; sumtype: (Y[15], *, sum)

Sequence in context: A161368 A023978 A152488 * A025087 A291810 A178183

Adjacent sequences: A109356 A109357 A109358 * A109360 A109361 A109362

nonn

Creighton Dement, Aug 22 2005

approved