A141719 Triangle online: 4, A140978(n+1) - A133819 .

4, 8, 8, 12, 15, 12, 16, 24, 21, 16, 20, 35, 32, 27, 20, 24, 48, 45, 40, 33, 24, 28, 63, 60, 55, 48, 39, 28, 32, 80, 77, 72, 65, 56, 45, 32, 36, 99, 96, 91, 84, 75, 64, 51, 36, 40, 120, 117, 112, 105, 96, 85, 72, 57, 40, 44

Offset

1,1

Comments

4 is A140978(0).

Links

Table of n, a(n) for n=1..56.

Formula

Triangle: 4; 8, 8; 12, 15, 12; 16, 24, 21, 16; 20, 35, 32, 27, 20; .

Crossrefs

Sequence in context: A273207 A145154 A072541 * A098352 A273395 A273456

Adjacent sequences: A141716 A141717 A141718 * A141720 A141721 A141722

Keyword

nonn,uned

Author

Paul Curtz, Sep 11 2008

Status

approved