0,2

a(k+1)=3((10^k)(110*3+405k-135)-3(18k+29)+162k+216)/81

a(2)=0+2+4+6+8+1+0+1+2+1+4+..+6+6=231

Adjacent sequences: A089340 A089341 A089342 this_sequence A089344 A089345 A089346

Sequence in context: A098647 A034832 A089370 this_sequence A012351 A033469 A012544

nonn,base

Yalcin Aktar (aktaryalcin(AT)msn.com), Dec 26 2003