1,2

Table of n, a(n) for n=1..18.

2627 is in the sequence because (1) it is a Perrin number and (2) the sum of its digits 2+6+2+7=17 is also a Perrin number.

Cf. A001608.

Sequence in context: A024784 A060528 A273728 * A209192 A052021 A217396

Adjacent sequences: A117590 A117591 A117592 * A117594 A117595 A117596

nonn,base

Luc Stevens (lms022(AT)yahoo.com), Apr 27 2006

approved