0,1

K. Russell and P. Carter, Number Puzzles, W. Foulsham and Co. Ltd. (1993).

98 x 3 / 2 =147

14 x 7 / 2 = 49

4 x 9 / 2 = 18

1 x 8 / 2 = 4

Sequence in context: A109120 A128483 A056937 this_sequence A087907 A096701 A131640

Adjacent sequences: A122469 A122470 A122471 this_sequence A122473 A122474 A122475

nonn

Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 14 2006