0,1

Seen in a newspaper quiz.

(3^n + (5-n)*(6-n) + 1)/2;

Sequence in context: A008665 A076823 A070551 this_sequence A070534 A070577 A072311

Adjacent sequences: A028490 A028491 A028492 this_sequence A028494 A028495 A028496

nonn,easy

Mark Orr (mjo(AT)cns.ed.ac.uk)